I've tried that as well as deleting the key and name registry keys under HKCU\Software\JP Software\Take Command 12, and upon starting Take Command, I initially get a message about 45 days remaining in the beta version, but then after that when the actual Take Command window comes up, I get the...

I'm having the same problem as Howard - upon trying to start TC I'm getting the message that my trial has expired. This is from any shortcut or by invoking tcmd.exe directly. Also the same as Howard, this is 32-bit on XP.