Index: vm/vmcore/src/class_support/classloader.cpp =================================================================== --- vm/vmcore/src/class_support/classloader.cpp (revision 539376) +++ vm/vmcore/src/class_support/classloader.cpp (working copy) @@ -427,9 +427,10 @@ { LMAutoUnlock aulock( &m_lock ); LoadingClass* lc = m_loadingClasses->Lookup(className); - assert(lc); - lc->SignalLoading(); - RemoveLoadingClass(className, lc); + if (lc) { + lc->SignalLoading(); + RemoveLoadingClass(className, lc); + } } ClassLoader* ClassLoader::FindByObject(ManagedObject* loader)