Sorry for missing information. Here it comes.
What version of Windows and what TCC (32-bit or 64-bit) are you running?
Windows and TCC are 32-bit versions.
TCC 11,00,44 Windows XP [Version 5,1,2600]
TCC Build 44 Windows XP Build 2600 Service Pack 3
Does it work if you use START /runas? Yes...