--- a/E5XML/MultiProjectReader.py	Tue Oct 03 19:37:44 2017 +0200
+++ b/E5XML/MultiProjectReader.py	Wed Oct 04 20:06:26 2017 +0200
@@ -96,7 +96,7 @@
                 if 'category' not in project:
                     # upgrade from 4.2 format
                     project["category"] = ""
-                self.multiProject.projects.append(project)
+                self.multiProject.addProject(project)
                 break
             
             if self.isStartElement():