# HG changeset patch
# User Chris Cannam
# Date 1588178900 -3600
# Node ID 5f8fc01e01c71f6a433e7cfe6f36dbae3c05d7bd
# Parent  5b6655449ba6d09df883ae50d5259e84d8346c64
Never blunder ahead without a document at this point! (Could happen if first model was opened using OSC)

diff -r 5b6655449ba6 -r 5f8fc01e01c7 framework/MainWindowBase.cpp
--- a/framework/MainWindowBase.cpp	Wed Apr 29 15:27:13 2020 +0100
+++ b/framework/MainWindowBase.cpp	Wed Apr 29 17:48:20 2020 +0100
@@ -1682,8 +1682,13 @@
         }
     }
 
+    if (mode != ReplaceSession && !m_document) {
+        SVDEBUG << "File open mode requested is something other than ReplaceSession, but we have no document at all yet, so we must use ReplaceSession mode" << endl;
+        mode = ReplaceSession;
+    }
+
     if (mode == CreateAdditionalModel && getMainModelId().isNone()) {
-        SVDEBUG << "Mode is CreateAdditionalModel but we have no main model, switching to ReplaceSession mode" << endl;
+        SVDEBUG << "File open mode requested is CreateAdditionalModel, but we have no main model, so switching to ReplaceSession mode" << endl;
         mode = ReplaceSession;
     }