Should not be any changes or difference in the timer area from 4.2 to 5.0 but I guess anything is possible.
Post the timer files that you are using and we will see if your problem can be duplicated.
How do I do that? BTW, I played with TNAP5 timers again and found that even though I set the timer for today it advanced the record date by 1 day all on its own.

