Still having trouble, despite using all the help from Bob D and Mike Rice.
I have upgraded to the latest FocusMax and have the latest versions of FW and SW for the TCC (I have TCC-1). I just now enabled the log focusmax to ACP to see what happens there. It is very strange, there is no error message in the console, the whole system hangs and requires me to ctrl-alt-del to stop both the rotate control and focusmax programs. Then, I can restart for a while. However, it could stop again at the next autofocus. Quite frustrated because I am stuck and cannot do unattended runs. What other things are there to look at?