I tried several times to install 12.1. The installer removed my old 12.0 and now the command processor won't run. I think I got tcmd to start but tcc gives and error message when I try to execute a command. I have gotten tcc to run but if I try to execute tcmd I now get the message cannot find \program files\jpsoft\tcmd12\tcmd.exe and that is the file I tried to execute.