Hello, Sometimes when i'm reloading a xref, i get the message: Internal error: dbobji notifyReactors (see also the attached file: acadstk.dmp) I suppose it has something to do with a corrupted database. What is exactly the problem? How can i prevent/solve it? Martin [Main] DumpEntries=1 [AcadCrashDump1] ExeTimeDateStamp=0x3AE3E695 CrashTimeDateStamp=0x3FFA61D3 acadVer=15.06s (LMS Tech) WinVer=0xC0000A04 DumpType=InternalError ErrorText=dbobji: notifyReactors 1 ContextFlags=0x10007 SegGs=0x0 SegFs=0x3E4F SegEs=0x187 SegDs=0x187 Edi=0x8175A07C Esi=0x1 Ebx=0x51FFB45 Edx=0xC167C4C0 Ecx=0x0 Eax=0x2A0014 Ebp=0x51FEA48 Eip=0x7B67AD SegCs=0x17F EFlags=0x246 Esp=0x51FEA3C SegSs=0x187 ReferenceAddr=0x989D36 ReferenceName=_WinMain@16 StackWalk0=51FF658,3B57AD,1,SymNone,+0,C:\PROGRAM FILES\AUTOCAD 2002\ACAD.EXE