When I select Project->Profile, IDE starts an application but it shows an Application Error message box with an exception 0x80000003. This happens for any code, even for empty main(). Compiler command line in Project Options is as follows: -Tx86-coff -Zi -Os -Ob1 -fp:precise -W1 -Gd -Gh, linker commnad line: -debug -debugtype:coff -subsystem:console -machine:x86 kernel32.lib advapi32.lib delayimp.lib profiler.lib. I have a Windows XP SP3 32-bit running Pelles C 6.50 RC1, which is NOT installed as JIT debugger.