Index: tol/OIS/oisloader.cpp
===================================================================
--- tol/OIS/oisloader.cpp	(revision 325ee5ecb923ea4c946fb86918c2988a0513068a)
+++ tol/OIS/oisloader.cpp	(revision 30b75c682d02d1a4cbd9661f4215d64f3a5c8b79)
@@ -822,4 +822,5 @@
     { 
       BClass* cls = BClass::PredeclareClass(name);
+      Ensure(cls);
       Ensure(Read(*cls,object_));
     //Std(BText("\nBOisLoader::ReadNextObject Reading Class ")+cls->Name()+" "+cls->FullName());