OK - Stayed home from work today to get my Insteon system working - its working now. Not sure what I did.
Seems like I need to spend major hours each year to keep this system working. I can't imagine selling my house and them requiring them to put in the same effort to keep it running.
Tried my older, unreliable PLM with similar (failed) results. Deleted the PLM and restored. Restored ISY from backup, restored all devices, etc. No joy.
I did notice that in the top level program folder called "My Programs", there is an "If" condition that has to be met for all programs below it to run. It was set to a condition that was reminiscent of a condition for a deleted device (forgot what the exact message was). I set it to "No Condition". But that ddin't fix it. I then restored all devices once again and my programs now work.
Last week my programs worked and as of Sunday they didn't - I didn't change anything, so why the sudden failure?
stusviews: I didn't' try your suggestion since the system now works. A good suggestion, however. From your mini-bio, you are a man of many talents. Impressive.