Another interesting line : 1963465: 0009:Call KERNEL32.MultiByteToWideChar(00000000,00000000,0032e5ec "Run-time error '13'",ffffffff,00000000,00000000) ret=66040665 0009:Ret KERNEL32.MultiByteToWideChar() retval=00000014 ret=66040665 (then a few thousand lines above : line 1958954) 0009:Call KERNEL32.MultiByteToWideChar(00000000,00000000,0042419c "SpeedTest32",ffffffff,00000000,00000000) ret=66026f2d 0009:Ret KERNEL32.MultiByteToWideChar() retval=0000000c ret=66026f2d 0009:Call oleaut32.SysAllocStringLen(00000000,0000000b) ret=66026f38 0009:Call ntdll.RtlAllocateHeap(00110000,00000000,0000001c) ret=7ea0269d 0009:Ret ntdll.RtlAllocateHeap() retval=019fb588 ret=7ea0269d 0009:Ret oleaut32.SysAllocStringLen() retval=019fb58c ret=66026f38 0009:Call KERNEL32.MultiByteToWideChar(00000000,00000000,0042419c "SpeedTest32",ffffffff,019fb58c,0000000c) ret=66026f50 0009:Ret KERNEL32.MultiByteToWideChar() retval=0000000c ret=66026f50 0009:Call KERNEL32.TlsGetValue(00000004) ret=66026d10 0009:Ret KERNEL32.TlsGetValue() retval=0013bc88 ret=66026d10 0009:Call KERNEL32.RaiseException(c000008f,00000001,00000002,0032ec38) ret=66026d97 0009:trace:seh:raise_exception code=c000008f flags=1 addr=0x7b844623 ip=7b844623 tid=0009 0009:trace:seh:raise_exception info[0]=deadcafe 0009:trace:seh:raise_exception info[1]=deadcafe 0009:trace:seh:raise_exception eax=7b82ee21 ebx=7b8b7ff4 ecx=00000000 edx=0032ec38 esi=0032ec38 edi=0032ebb0 0009:trace:seh:raise_exception ebp=0032eb98 esp=0032eb34 cs=0073 ds=007b es=007b fs=0033 gs=003b flags=00000246 0009:trace:seh:call_vectored_handlers calling handler at 0x7e82f010 code=c000008f flags=1 0009:trace:seh:call_vectored_handlers handler at 0x7e82f010 returned 0 0009:trace:seh:call_vectored_handlers calling handler at 0x7b841280 code=c000008f flags=1 0009:trace:seh:call_vectored_handlers handler at 0x7b841280 returned 0 0009:trace:seh:call_stack_handlers calling handler at 0x4055d6 code=c000008f flags=1 0009:Call KERNEL32.IsBadReadPtr(004019f0,00000004) ret=660270ae 0009:Ret KERNEL32.IsBadReadPtr() retval=00000000 ret=660270ae 0009:trace:seh:call_stack_handlers handler at 0x4055d6 returned 1 0009:trace:seh:call_stack_handlers calling handler at 0x4055d6 code=c000008f flags=1 0009:Call KERNEL32.IsBadReadPtr(004013d0,00000004) ret=660270ae 0009:Ret KERNEL32.IsBadReadPtr() retval=00000000 ret=660270ae 0009:Call KERNEL32.TlsGetValue(00000004) ret=66026dc9 0009:Ret KERNEL32.TlsGetValue() retval=0013bc88 ret=66026dc9 0009:Call ntdll.RtlUnwind(0032ee1c,66102497,00000000,00000000) ret=66102497 0009: eax=00000001 ebx=7b82d730 ecx=0032ee1c edx=0013bc88 esi=004013d0 edi=0032ee1c ebp=0032e69c esp=0032e690 ds=007b es=007b fs=0033 gs=003b flags=00000202 0009:trace:seh:__regs_RtlUnwind code=c0000027 flags=2 0009:trace:seh:__regs_RtlUnwind calling handler at 0x7bc6b990 code=c0000027 flags=2 0009:trace:seh:__regs_RtlUnwind handler at 0x7bc6b990 returned 1 0009:trace:seh:__regs_RtlUnwind calling handler at 0x4055d6 code=c0000027 flags=2 This is a last occurence of an error like that before the Error 13 message is generated- so it seems not to have anything to do with tray. Still reading the log, but if something is familiar to you, please speak up :) Lukasz