I've got an XPSP2 machine that runs TCMD/TCC just fine, except for the IDE. I can attempt to use the command line ("ide" or "bdebugger") or the ide.exe directly, but it fails with no error: the prompt returns without fanfare. I've checked my aliases: "which" comes back with "ide is an internal command". The only way it will run--and even then, only occasionally and not repeatably--is when I click the 'edit/debug' button on the TCMD Explorer Bar. I've not noted this problem on any other system.