Hello, I finished an update for an Visual C++ application. The version before works without problems, and I did no change at my compiler Settings. But on all Computers cxcept of my Development machine, I get the following exception: Unhandled exception 0xE0434F4D (UNKNOWN TYPE) caught at address 0x7697B727 in the thread 4532. -> Registers: EAX = 0x0018F220, EBX = 0xE0434F4D, ECX = 0x00000001, EDX = 0x00000000, ESI = 0x0018F2A8, EDI = 0x0033B290, EBP = 0x0018F270, ESP = 0x0018F220, EFlags = 0x00000212, CS = 0x0023, SS = 0x002B, DS = 0x002B, ES = 0x2B, FS = 0x0053, GS = 0x002B -> Last error: 0x000000B7 -> Call stack (thread 4532): KERNELBASE(?) : RaiseException(0xE0434F4D,0x00000001,0x00000001,0x0018F2A8,0x84CD36CD) + 88 bytes -> Call stack (thread 3568): ntdll(?) : ZwWaitForMultipleObjects(0x04CFFE18,0x04CFFE8C,0x00000000,0xFFFFFFFF,0x00000000) + 21 bytes -> Call stack (thread 3608): ntdll(?) : ZwWaitForSingleObject(0x00000208,0x000007D0,0x00000000,0x76711141,0x0548FCFC) + 21 bytes -> Call stack (thread 3864): ntdll(?) : ZwWaitForMultipleObjects(0x00000000,0x0776FFD4,0x773A9F02,0x003A26E8,0x7032659A) + 21 bytes -> Call stack (thread 4300): ntdll(?) : ZwWaitForWorkViaWorkerFactory(0x00389F98,0x0786FFD4,0x773A9F02,0x00389F98,0x70C2659A) + 18 bytes -> Call stack (thread 4600): ntdll(?) : ZwWaitForWorkViaWorkerFactory(0x00389F98,0x079AFFD4,0x773A9F02,0x00389F98,0x70DE659A) + 18 bytes -> Call stack (thread 3496): ntdll(?) : NtDelayExecution(0x0000EA60,0x00000000,0x07AEFF78,0x7682580C,0x0000EA60) + 21 bytes -> Computer configuration: OS type: WIN32 NT OS version: major 6, minor 1, build 7600 Number of processors: 2 Processor type: GenuineIntel, stepping 10, model 7, instruction family 6 Processor name: Intel(R) Core(TM)2 Duo CPU T6500 @ 2.10GHz Processor features: FPU, MMX, SSE, SSE2, CLFLUSH, RDTSC, CMPXCHG8B, CMOV More processor features: VME, DE, PSE, MSR, PAE, MCE, APIC, SEP, MTRR, PGE, MCA, PAT, PSE36, FXSR, DS, SS, TM I have no idea where I could start searching the problem. Can somebody help me? Thank You, Johannes