From aaad6cffba1714e4dcdad7268cbb306a6ca8ed20 Mon Sep 17 00:00:00 2001
From: Axel Kohlmeyer <akohlmey@gmail.com>
Date: Tue, 5 Sep 2023 18:03:05 -0400
Subject: [PATCH] must close LAMMPS instance after loading new file.

---
 tools/lammps-gui/lammpsgui.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/lammps-gui/lammpsgui.cpp b/tools/lammps-gui/lammpsgui.cpp
index e3468decc4..5cecb5bfa8 100644
--- a/tools/lammps-gui/lammpsgui.cpp
+++ b/tools/lammps-gui/lammpsgui.cpp
@@ -636,6 +636,7 @@ void LammpsGui::open_file(const QString &fileName)
         slideshow = nullptr;
     }
     update_variables();
+    lammps.close();
 }
 
 void LammpsGui::write_file(const QString &fileName)