Thanks, the problem seemed to be that glibc timeout_add function stopped scheduling the call back function to read the status of linuxcnc due to a function being missing form al old version of psutils. The function was being called to get to get the CPU load and upon failing killed everything in the 50mS thread.
Took a while to track that down as it didn't seem related. All working now so Im trying to modify one of the SIM sets of configs to run a parallel port for step and direction. Without much success.
