ACTIVATE Causes TCMD to Terminate

I have a script for positioning windows. For TCMD 27 the following command works fine:

activate "TC 27*" /pos=1170,503,1100,897

With TCMD 30, I think it had been working, but now the command

activate "TC 30*" /pos=1170,503,1100,897

causes Take Command to close.

Does anyone else see this?