Please submit a bug in the SQLTools++ bug tracker: http://sourceforge.net/tracker/?func=add&group_id=220648&atid=1050077 You could also mail this information to . We need the stack trace (see below) and short description what were you doing when this problem occurred. Unknown SE exception(0xc0000006) Program: SQLTools_pp 1.21 RC3 (for trouble-shooting) Location: ..\OpenEditor\OEView_1.cpp(412). Platform: MS Windows XP Professional, Service Pack 3 (Build 2600) COMCTL32.DLL: 6.0.2900.5512 OCI.DLL: 8.0.6.0.0 Connected to: 10.2.0.3.0 Stack at the throw point: 0x44a6d6 0x4a6d6 0x44aae5 0x4aae5 0x44a5dd 0x4a5dd 0x46685e 0x6685e 0x4e1200 0xe1200 0x4dcffd 0xdcffd 0x462947 0x62947 0x4df781 0xdf781 0x4df80e 0xdf80e 0x7e368734 GetDC() + 0x6d 0x7e368816 GetDC() + 0x14f 0x7e378ea0 DefWindowProcW() + 0x180 0x7e378eec DefWindowProcW() + 0x1cc 0x7c90e453 KiUserCallbackDispatcher() + 0x13 0x7e3696c7 DispatchMessageA() + 0xf 0x4e559e 0xe559e 0x84d8bec Stack at the catch point: 0x7c90e4f4 ntdll KiFastSystemCallRet() + 0