diff --git a/src/CLASS2/pair_lj_class2.cpp b/src/CLASS2/pair_lj_class2.cpp
index 90f5881ffd..9ae9613a74 100644
--- a/src/CLASS2/pair_lj_class2.cpp
+++ b/src/CLASS2/pair_lj_class2.cpp
@@ -37,18 +37,20 @@ PairLJClass2::PairLJClass2(LAMMPS *lmp) : Pair(lmp)
 
 PairLJClass2::~PairLJClass2()
 {
-  if (allocated) {
-    memory->destroy(setflag);
-    memory->destroy(cutsq);
+  if (!copymode) {
+    if (allocated) {
+      memory->destroy(setflag);
+      memory->destroy(cutsq);
 
-    memory->destroy(cut);
-    memory->destroy(epsilon);
-    memory->destroy(sigma);
-    memory->destroy(lj1);
-    memory->destroy(lj2);
-    memory->destroy(lj3);
-    memory->destroy(lj4);
-    memory->destroy(offset);
+      memory->destroy(cut);
+      memory->destroy(epsilon);
+      memory->destroy(sigma);
+      memory->destroy(lj1);
+      memory->destroy(lj2);
+      memory->destroy(lj3);
+      memory->destroy(lj4);
+      memory->destroy(offset);
+    }
   }
 }
 
diff --git a/src/CLASS2/pair_lj_class2.h b/src/CLASS2/pair_lj_class2.h
index b6b604cbca..4a89ce2a3f 100644
--- a/src/CLASS2/pair_lj_class2.h
+++ b/src/CLASS2/pair_lj_class2.h
@@ -29,9 +29,9 @@ class PairLJClass2 : public Pair {
   PairLJClass2(class LAMMPS *);
   virtual ~PairLJClass2();
   virtual void compute(int, int);
-  void settings(int, char **);
+  virtual void settings(int, char **);
   void coeff(int, char **);
-  double init_one(int, int);
+  virtual double init_one(int, int);
   void write_restart(FILE *);
   void read_restart(FILE *);
   void write_restart_settings(FILE *);
@@ -46,7 +46,7 @@ class PairLJClass2 : public Pair {
   double **epsilon,**sigma;
   double **lj1,**lj2,**lj3,**lj4,**offset;
 
-  void allocate();
+  virtual void allocate();
 };
 
 }
diff --git a/src/CLASS2/pair_lj_class2_coul_cut.cpp b/src/CLASS2/pair_lj_class2_coul_cut.cpp
index 7f851fd239..23f4d36141 100644
--- a/src/CLASS2/pair_lj_class2_coul_cut.cpp
+++ b/src/CLASS2/pair_lj_class2_coul_cut.cpp
@@ -38,21 +38,23 @@ PairLJClass2CoulCut::PairLJClass2CoulCut(LAMMPS *lmp) : Pair(lmp)
 
 PairLJClass2CoulCut::~PairLJClass2CoulCut()
 {
-  if (allocated) {
-    memory->destroy(setflag);
-    memory->destroy(cutsq);
+  if (!copymode) {
+    if (allocated) {
+      memory->destroy(setflag);
+      memory->destroy(cutsq);
 
-    memory->destroy(cut_lj);
-    memory->destroy(cut_ljsq);
-    memory->destroy(cut_coul);
-    memory->destroy(cut_coulsq);
-    memory->destroy(epsilon);
-    memory->destroy(sigma);
-    memory->destroy(lj1);
-    memory->destroy(lj2);
-    memory->destroy(lj3);
-    memory->destroy(lj4);
-    memory->destroy(offset);
+      memory->destroy(cut_lj);
+      memory->destroy(cut_ljsq);
+      memory->destroy(cut_coul);
+      memory->destroy(cut_coulsq);
+      memory->destroy(epsilon);
+      memory->destroy(sigma);
+      memory->destroy(lj1);
+      memory->destroy(lj2);
+      memory->destroy(lj3);
+      memory->destroy(lj4);
+      memory->destroy(offset);
+    }
   }
 }
 
diff --git a/src/CLASS2/pair_lj_class2_coul_cut.h b/src/CLASS2/pair_lj_class2_coul_cut.h
index cea218f759..9b9c654ec6 100644
--- a/src/CLASS2/pair_lj_class2_coul_cut.h
+++ b/src/CLASS2/pair_lj_class2_coul_cut.h
@@ -29,10 +29,10 @@ class PairLJClass2CoulCut : public Pair {
   PairLJClass2CoulCut(class LAMMPS *);
   virtual ~PairLJClass2CoulCut();
   virtual void compute(int, int);
-  void settings(int, char **);
+  virtual void settings(int, char **);
   void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
+  virtual void init_style();
+  virtual double init_one(int, int);
   void write_restart(FILE *);
   void read_restart(FILE *);
   void write_restart_settings(FILE *);
@@ -48,7 +48,7 @@ class PairLJClass2CoulCut : public Pair {
   double **epsilon,**sigma;
   double **lj1,**lj2,**lj3,**lj4,**offset;
 
-  void allocate();
+  virtual void allocate();
 };
 
 }
diff --git a/src/CLASS2/pair_lj_class2_coul_long.cpp b/src/CLASS2/pair_lj_class2_coul_long.cpp
index 2460515b98..7801e1687f 100644
--- a/src/CLASS2/pair_lj_class2_coul_long.cpp
+++ b/src/CLASS2/pair_lj_class2_coul_long.cpp
@@ -50,19 +50,21 @@ PairLJClass2CoulLong::PairLJClass2CoulLong(LAMMPS *lmp) : Pair(lmp)
 
 PairLJClass2CoulLong::~PairLJClass2CoulLong()
 {
-  if (allocated) {
-    memory->destroy(setflag);
-    memory->destroy(cutsq);
+  if (!copymode) {
+    if (allocated) {
+      memory->destroy(setflag);
+      memory->destroy(cutsq);
 
-    memory->destroy(cut_lj);
-    memory->destroy(cut_ljsq);
-    memory->destroy(epsilon);
-    memory->destroy(sigma);
-    memory->destroy(lj1);
-    memory->destroy(lj2);
-    memory->destroy(lj3);
-    memory->destroy(lj4);
-    memory->destroy(offset);
+      memory->destroy(cut_lj);
+      memory->destroy(cut_ljsq);
+      memory->destroy(epsilon);
+      memory->destroy(sigma);
+      memory->destroy(lj1);
+      memory->destroy(lj2);
+      memory->destroy(lj3);
+      memory->destroy(lj4);
+      memory->destroy(offset);
+    }
   }
 }
 
diff --git a/src/CLASS2/pair_lj_class2_coul_long.h b/src/CLASS2/pair_lj_class2_coul_long.h
index 829c4f23e0..202aaaaa43 100644
--- a/src/CLASS2/pair_lj_class2_coul_long.h
+++ b/src/CLASS2/pair_lj_class2_coul_long.h
@@ -29,10 +29,10 @@ class PairLJClass2CoulLong : public Pair {
   PairLJClass2CoulLong(class LAMMPS *);
   virtual ~PairLJClass2CoulLong();
   virtual void compute(int, int);
-  void settings(int, char **);
+  virtual void settings(int, char **);
   void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
+  virtual void init_style();
+  virtual double init_one(int, int);
   void write_restart(FILE *);
   void read_restart(FILE *);
   void write_restart_settings(FILE *);
@@ -50,7 +50,7 @@ class PairLJClass2CoulLong : public Pair {
   double **lj1,**lj2,**lj3,**lj4,**offset;
   double g_ewald;
 
-  void allocate();
+  virtual void allocate();
 };
 
 }
diff --git a/src/KOKKOS/pair_kokkos.h b/src/KOKKOS/pair_kokkos.h
index 288f338c17..f3bef77b86 100644
--- a/src/KOKKOS/pair_kokkos.h
+++ b/src/KOKKOS/pair_kokkos.h
@@ -621,7 +621,7 @@ EV_FLOAT pair_compute_neighlist (PairStyle* fpair, typename Kokkos::Impl::enable
   EV_FLOAT ev;
   (void) fpair;
   (void) list;
-  printf("ERROR: calling pair_compute with invalid neighbor list style: requested %i  available %i",NEIGHFLAG,PairStyle::EnabledNeighFlags);
+  printf("ERROR: calling pair_compute with invalid neighbor list style: requested %i  available %i \n",NEIGHFLAG,PairStyle::EnabledNeighFlags);
   return ev;
 }
 
@@ -630,7 +630,7 @@ EV_FLOAT pair_compute_fullcluster (PairStyle* fpair, typename Kokkos::Impl::enab
   EV_FLOAT ev;
   (void) fpair;
   (void) list;
-  printf("ERROR: calling pair_compute with invalid neighbor list style: requested %i  available %i",FULLCLUSTER,PairStyle::EnabledNeighFlags);
+  printf("ERROR: calling pair_compute with invalid neighbor list style: requested %i  available %i \n",FULLCLUSTER,PairStyle::EnabledNeighFlags);
   return ev;
 }
 
diff --git a/src/KSPACE/pair_buck_coul_long.cpp b/src/KSPACE/pair_buck_coul_long.cpp
index 7db7211908..08d3ebf3d7 100644
--- a/src/KSPACE/pair_buck_coul_long.cpp
+++ b/src/KSPACE/pair_buck_coul_long.cpp
@@ -50,21 +50,23 @@ PairBuckCoulLong::PairBuckCoulLong(LAMMPS *lmp) : Pair(lmp)
 
 PairBuckCoulLong::~PairBuckCoulLong()
 {
-  if (allocated) {
-    memory->destroy(setflag);
-    memory->destroy(cutsq);
+  if (!copymode) {
+    if (allocated) {
+      memory->destroy(setflag);
+      memory->destroy(cutsq);
 
-    memory->destroy(cut_lj);
-    memory->destroy(cut_ljsq);
-    memory->destroy(a);
-    memory->destroy(rho);
-    memory->destroy(c);
-    memory->destroy(rhoinv);
-    memory->destroy(buck1);
-    memory->destroy(buck2);
-    memory->destroy(offset);
+      memory->destroy(cut_lj);
+      memory->destroy(cut_ljsq);
+      memory->destroy(a);
+      memory->destroy(rho);
+      memory->destroy(c);
+      memory->destroy(rhoinv);
+      memory->destroy(buck1);
+      memory->destroy(buck2);
+      memory->destroy(offset);
+    }
+    if (ftable) free_tables();
   }
-  if (ftable) free_tables();
 }
 
 /* ---------------------------------------------------------------------- */
diff --git a/src/KSPACE/pair_buck_coul_long.h b/src/KSPACE/pair_buck_coul_long.h
index 48bd707941..c19c2d8a5a 100644
--- a/src/KSPACE/pair_buck_coul_long.h
+++ b/src/KSPACE/pair_buck_coul_long.h
@@ -52,7 +52,7 @@ class PairBuckCoulLong : public Pair {
   double *cut_respa;
   double g_ewald;
 
-  void allocate();
+  virtual void allocate();
 };
 
 }
diff --git a/src/KSPACE/pair_coul_long.cpp b/src/KSPACE/pair_coul_long.cpp
index 84c4854deb..8d9347be7b 100644
--- a/src/KSPACE/pair_coul_long.cpp
+++ b/src/KSPACE/pair_coul_long.cpp
@@ -55,13 +55,15 @@ PairCoulLong::PairCoulLong(LAMMPS *lmp) : Pair(lmp)
 
 PairCoulLong::~PairCoulLong()
 {
-  if (allocated) {
-    memory->destroy(setflag);
-    memory->destroy(cutsq);
+  if (!copymode) {
+    if (allocated) {
+      memory->destroy(setflag);
+      memory->destroy(cutsq);
 
-    memory->destroy(scale);
+      memory->destroy(scale);
+    }
+    if (ftable) free_tables();
   }
-  if (ftable) free_tables();
 }
 
 /* ---------------------------------------------------------------------- */
diff --git a/src/KSPACE/pair_coul_long.h b/src/KSPACE/pair_coul_long.h
index 0629dfedaa..a231127381 100644
--- a/src/KSPACE/pair_coul_long.h
+++ b/src/KSPACE/pair_coul_long.h
@@ -32,7 +32,7 @@ class PairCoulLong : public Pair {
   virtual void settings(int, char **);
   void coeff(int, char **);
   virtual void init_style();
-  double init_one(int, int);
+  virtual double init_one(int, int);
   void write_restart(FILE *);
   void read_restart(FILE *);
   virtual void write_restart_settings(FILE *);
@@ -46,7 +46,7 @@ class PairCoulLong : public Pair {
   double g_ewald;
   double **scale;
 
-  void allocate();
+  virtual void allocate();
 };
 
 }
diff --git a/src/KSPACE/pair_lj_charmm_coul_long.cpp b/src/KSPACE/pair_lj_charmm_coul_long.cpp
index a92d175cc2..1fbacdee77 100644
--- a/src/KSPACE/pair_lj_charmm_coul_long.cpp
+++ b/src/KSPACE/pair_lj_charmm_coul_long.cpp
@@ -59,24 +59,27 @@ PairLJCharmmCoulLong::PairLJCharmmCoulLong(LAMMPS *lmp) : Pair(lmp)
 
 PairLJCharmmCoulLong::~PairLJCharmmCoulLong()
 {
-  if (allocated) {
-    memory->destroy(setflag);
-    memory->destroy(cutsq);
+  if (!copymode) {
+    if (allocated) {
+      memory->destroy(setflag);
+      memory->destroy(cutsq);
 
-    memory->destroy(epsilon);
-    memory->destroy(sigma);
-    memory->destroy(eps14);
-    memory->destroy(sigma14);
-    memory->destroy(lj1);
-    memory->destroy(lj2);
-    memory->destroy(lj3);
-    memory->destroy(lj4);
-    memory->destroy(lj14_1);
-    memory->destroy(lj14_2);
-    memory->destroy(lj14_3);
-    memory->destroy(lj14_4);
+      memory->destroy(epsilon);
+      memory->destroy(sigma);
+      memory->destroy(eps14);
+      memory->destroy(sigma14);
+      memory->destroy(lj1);
+      memory->destroy(lj2);
+      memory->destroy(lj3);
+      memory->destroy(lj4);
+      memory->destroy(lj14_1);
+      memory->destroy(lj14_2);
+      memory->destroy(lj14_3);
+      memory->destroy(lj14_4);
+      memory->destroy(offset);
+    }
+    if (ftable) free_tables();
   }
-  if (ftable) free_tables();
 }
 
 /* ---------------------------------------------------------------------- */
@@ -643,6 +646,7 @@ void PairLJCharmmCoulLong::allocate()
   memory->create(lj14_2,n+1,n+1,"pair:lj14_2");
   memory->create(lj14_3,n+1,n+1,"pair:lj14_3");
   memory->create(lj14_4,n+1,n+1,"pair:lj14_4");
+  memory->create(offset,n+1,n+1,"pair:offset");
 }
 
 /* ----------------------------------------------------------------------
diff --git a/src/KSPACE/pair_lj_charmm_coul_long.h b/src/KSPACE/pair_lj_charmm_coul_long.h
index 09cf57fffd..8e2c049088 100644
--- a/src/KSPACE/pair_lj_charmm_coul_long.h
+++ b/src/KSPACE/pair_lj_charmm_coul_long.h
@@ -30,11 +30,11 @@ class PairLJCharmmCoulLong : public Pair {
   virtual ~PairLJCharmmCoulLong();
 
   virtual void compute(int, int);
-  void settings(int, char **);
+  virtual void settings(int, char **);
   void coeff(int, char **);
-  void init_style();
+  virtual void init_style();
   void init_list(int, class NeighList *);
-  double init_one(int, int);
+  virtual double init_one(int, int);
   void write_restart(FILE *);
   void read_restart(FILE *);
   void write_restart_settings(FILE *);
@@ -61,7 +61,7 @@ class PairLJCharmmCoulLong : public Pair {
   double *cut_respa;
   double g_ewald;
 
-  void allocate();
+  virtual void allocate();
 };
 
 }
diff --git a/src/MOLECULE/pair_lj_charmm_coul_charmm.cpp b/src/MOLECULE/pair_lj_charmm_coul_charmm.cpp
index 430b805f0f..89f4350335 100644
--- a/src/MOLECULE/pair_lj_charmm_coul_charmm.cpp
+++ b/src/MOLECULE/pair_lj_charmm_coul_charmm.cpp
@@ -43,7 +43,8 @@ PairLJCharmmCoulCharmm::PairLJCharmmCoulCharmm(LAMMPS *lmp) : Pair(lmp)
 
 PairLJCharmmCoulCharmm::~PairLJCharmmCoulCharmm()
 {
-  if (allocated) {
+  if (!copymode) {
+   if (allocated) {
     memory->destroy(setflag);
     memory->destroy(cutsq);
 
@@ -59,6 +60,7 @@ PairLJCharmmCoulCharmm::~PairLJCharmmCoulCharmm()
     memory->destroy(lj14_2);
     memory->destroy(lj14_3);
     memory->destroy(lj14_4);
+   }
   }
 }
 
diff --git a/src/MOLECULE/pair_lj_charmm_coul_charmm.h b/src/MOLECULE/pair_lj_charmm_coul_charmm.h
index 3f59953b93..1c4ef00fc5 100644
--- a/src/MOLECULE/pair_lj_charmm_coul_charmm.h
+++ b/src/MOLECULE/pair_lj_charmm_coul_charmm.h
@@ -29,10 +29,10 @@ class PairLJCharmmCoulCharmm : public Pair {
   PairLJCharmmCoulCharmm(class LAMMPS *);
   virtual ~PairLJCharmmCoulCharmm();
   virtual void compute(int, int);
-  void settings(int, char **);
+  virtual void settings(int, char **);
   void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
+  virtual void init_style();
+  virtual double init_one(int, int);
   void write_restart(FILE *);
   void read_restart(FILE *);
   void write_restart_settings(FILE *);
@@ -51,7 +51,7 @@ class PairLJCharmmCoulCharmm : public Pair {
   double **lj1,**lj2,**lj3,**lj4;
   double **lj14_1,**lj14_2,**lj14_3,**lj14_4;
 
-  void allocate();
+  virtual void allocate();
 };
 
 }
diff --git a/src/pair_buck_coul_cut.cpp b/src/pair_buck_coul_cut.cpp
index 0faf6a6f42..1021bd1e4d 100644
--- a/src/pair_buck_coul_cut.cpp
+++ b/src/pair_buck_coul_cut.cpp
@@ -42,7 +42,7 @@ PairBuckCoulCut::PairBuckCoulCut(LAMMPS *lmp) : Pair(lmp)
 
 PairBuckCoulCut::~PairBuckCoulCut()
 {
-  if (allocated) {
+  if (!copymode) {
     memory->destroy(setflag);
     memory->destroy(cutsq);
 
diff --git a/src/pair_buck_coul_cut.h b/src/pair_buck_coul_cut.h
index cefcc0a701..b400ca3152 100644
--- a/src/pair_buck_coul_cut.h
+++ b/src/pair_buck_coul_cut.h
@@ -48,7 +48,7 @@ class PairBuckCoulCut : public Pair {
   double **a,**rho,**c;
   double **rhoinv,**buck1,**buck2,**offset;
 
-  void allocate();
+  virtual void allocate();
 };
 
 }
diff --git a/src/pair_lj_cut_coul_dsf.cpp b/src/pair_lj_cut_coul_dsf.cpp
index 4d3cbd9a45..0cebb4a845 100644
--- a/src/pair_lj_cut_coul_dsf.cpp
+++ b/src/pair_lj_cut_coul_dsf.cpp
@@ -52,19 +52,21 @@ PairLJCutCoulDSF::PairLJCutCoulDSF(LAMMPS *lmp) : Pair(lmp)
 
 PairLJCutCoulDSF::~PairLJCutCoulDSF()
 {
-  if (allocated) {
-    memory->destroy(setflag);
-    memory->destroy(cutsq);
+  if (!copymode) {
+    if (allocated) {
+      memory->destroy(setflag);
+      memory->destroy(cutsq);
 
-    memory->destroy(cut_lj);
-    memory->destroy(cut_ljsq);
-    memory->destroy(epsilon);
-    memory->destroy(sigma);
-    memory->destroy(lj1);
-    memory->destroy(lj2);
-    memory->destroy(lj3);
-    memory->destroy(lj4);
-    memory->destroy(offset);
+      memory->destroy(cut_lj);
+      memory->destroy(cut_ljsq);
+      memory->destroy(epsilon);
+      memory->destroy(sigma);
+      memory->destroy(lj1);
+      memory->destroy(lj2);
+      memory->destroy(lj3);
+      memory->destroy(lj4);
+      memory->destroy(offset);
+    }
   }
 }
 
diff --git a/src/pair_lj_cut_coul_dsf.h b/src/pair_lj_cut_coul_dsf.h
index 7cbc2ad4ff..5a0a6b553d 100644
--- a/src/pair_lj_cut_coul_dsf.h
+++ b/src/pair_lj_cut_coul_dsf.h
@@ -31,8 +31,8 @@ class PairLJCutCoulDSF : public Pair {
   void compute(int, int);
   void settings(int, char **);
   void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
+  virtual void init_style();
+  virtual double init_one(int, int);
   void write_restart(FILE *);
   void read_restart(FILE *);
   void write_restart_settings(FILE *);
@@ -50,7 +50,7 @@ class PairLJCutCoulDSF : public Pair {
   double alpha;
   double f_shift,e_shift;
   
-  void allocate();
+  virtual void allocate();
 };
 
 }
diff --git a/src/pair_lj_expand.cpp b/src/pair_lj_expand.cpp
index 02e148fe4e..0085a4acd5 100644
--- a/src/pair_lj_expand.cpp
+++ b/src/pair_lj_expand.cpp
@@ -38,7 +38,8 @@ PairLJExpand::PairLJExpand(LAMMPS *lmp) : Pair(lmp)
 
 PairLJExpand::~PairLJExpand()
 {
-  if (allocated) {
+  if (!copymode) {
+   if (allocated) {
     memory->destroy(setflag);
     memory->destroy(cutsq);
 
@@ -51,6 +52,7 @@ PairLJExpand::~PairLJExpand()
     memory->destroy(lj3);
     memory->destroy(lj4);
     memory->destroy(offset);
+   }
   }
 }
 
diff --git a/src/pair_lj_expand.h b/src/pair_lj_expand.h
index 05ef3d26e9..3a32716003 100644
--- a/src/pair_lj_expand.h
+++ b/src/pair_lj_expand.h
@@ -30,9 +30,9 @@ class PairLJExpand : public Pair {
   virtual ~PairLJExpand();
 
   virtual void compute(int, int);
-  void settings(int, char **);
+  virtual void settings(int, char **);
   void coeff(int, char **);
-  double init_one(int, int);
+  virtual double init_one(int, int);
   void write_restart(FILE *);
   void read_restart(FILE *);
   void write_restart_settings(FILE *);
@@ -48,7 +48,7 @@ class PairLJExpand : public Pair {
   double **epsilon,**sigma,**shift;
   double **lj1,**lj2,**lj3,**lj4,**offset;
 
-  void allocate();
+  virtual void allocate();
 };
 
 }
diff --git a/src/pair_lj_gromacs.cpp b/src/pair_lj_gromacs.cpp
index 5b4bb35089..d81be7e83d 100644
--- a/src/pair_lj_gromacs.cpp
+++ b/src/pair_lj_gromacs.cpp
@@ -41,7 +41,8 @@ PairLJGromacs::PairLJGromacs(LAMMPS *lmp) : Pair(lmp)
 
 PairLJGromacs::~PairLJGromacs()
 {
-  if (allocated) {
+  if (!copymode) {
+   if (allocated) {
     memory->destroy(setflag);
     memory->destroy(cutsq);
 
@@ -59,6 +60,7 @@ PairLJGromacs::~PairLJGromacs()
     memory->destroy(ljsw3);
     memory->destroy(ljsw4);
     memory->destroy(ljsw5);
+   }
   }
 }
 
diff --git a/src/pair_lj_gromacs.h b/src/pair_lj_gromacs.h
index f02db18c03..c58de220f8 100644
--- a/src/pair_lj_gromacs.h
+++ b/src/pair_lj_gromacs.h
@@ -31,7 +31,7 @@ class PairLJGromacs : public Pair {
   virtual void compute(int, int);
   virtual void settings(int, char **);
   void coeff(int, char **);
-  double init_one(int, int);
+  virtual double init_one(int, int);
   void write_restart(FILE *);
   void read_restart(FILE *);
   virtual void write_restart_settings(FILE *);
@@ -47,7 +47,7 @@ class PairLJGromacs : public Pair {
   double **lj1,**lj2,**lj3,**lj4;
   double **ljsw1,**ljsw2,**ljsw3,**ljsw4,**ljsw5;
 
-  void allocate();
+  virtual void allocate();
 };
 
 }
diff --git a/src/pair_lj_gromacs_coul_gromacs.cpp b/src/pair_lj_gromacs_coul_gromacs.cpp
index 5a78c4e140..bd9bb56c7e 100644
--- a/src/pair_lj_gromacs_coul_gromacs.cpp
+++ b/src/pair_lj_gromacs_coul_gromacs.cpp
@@ -41,7 +41,8 @@ PairLJGromacsCoulGromacs::PairLJGromacsCoulGromacs(LAMMPS *lmp) : Pair(lmp)
 
 PairLJGromacsCoulGromacs::~PairLJGromacsCoulGromacs()
 {
-  if (allocated) {
+  if (!copymode) {
+   if (allocated) {
     memory->destroy(setflag);
     memory->destroy(cutsq);
 
@@ -56,6 +57,7 @@ PairLJGromacsCoulGromacs::~PairLJGromacsCoulGromacs()
     memory->destroy(ljsw3);
     memory->destroy(ljsw4);
     memory->destroy(ljsw5);
+   }
   }
 }
 
diff --git a/src/pair_lj_gromacs_coul_gromacs.h b/src/pair_lj_gromacs_coul_gromacs.h
index 378a51a98c..85b3051b25 100644
--- a/src/pair_lj_gromacs_coul_gromacs.h
+++ b/src/pair_lj_gromacs_coul_gromacs.h
@@ -31,8 +31,8 @@ class PairLJGromacsCoulGromacs : public Pair {
   virtual void compute(int, int);
   virtual void settings(int, char **);
   void coeff(int, char **);
-  void init_style();
-  double init_one(int, int);
+  virtual void init_style();
+  virtual double init_one(int, int);
   void write_restart(FILE *);
   void read_restart(FILE *);
   virtual void write_restart_settings(FILE *);
@@ -49,7 +49,7 @@ class PairLJGromacsCoulGromacs : public Pair {
   double **ljsw1,**ljsw2,**ljsw3,**ljsw4,**ljsw5;
   double coulsw1,coulsw2,coulsw3,coulsw4,coulsw5;
 
-  void allocate();
+  virtual void allocate();
 };
 
 }