diff --git a/src/musredit_qt5/mupp/PmuppScript.cpp b/src/musredit_qt5/mupp/PmuppScript.cpp
index 8783e673..dfd24d7a 100644
--- a/src/musredit_qt5/mupp/PmuppScript.cpp
+++ b/src/musredit_qt5/mupp/PmuppScript.cpp
@@ -208,7 +208,8 @@ int PmuppScript::loadCollection(const QString str)
   flnList << fln;
 
   QString errorMsg("");
-  fParamDataHandler->ReadParamFile(flnList, errorMsg);
+  if (!fParamDataHandler->ReadParamFile(flnList, errorMsg))
+    return 1;
 
   return 0;
 }
diff --git a/src/musredit_qt6/mupp/PmuppScript.cpp b/src/musredit_qt6/mupp/PmuppScript.cpp
index 4d9ddafb..fdf21c3f 100644
--- a/src/musredit_qt6/mupp/PmuppScript.cpp
+++ b/src/musredit_qt6/mupp/PmuppScript.cpp
@@ -200,7 +200,8 @@ int PmuppScript::loadCollection(const QString str)
   flnList << fln;
 
   QString errorMsg("");
-  fParamDataHandler->ReadParamFile(flnList, errorMsg);
+  if (!fParamDataHandler->ReadParamFile(flnList, errorMsg))
+    return 1;
 
   return 0;
 }