Yes, Dalchina, you are absolutely correct. That's why I took a "gently probabilistic" approach to offering the tool. It *may* be able to help, but it is by no means guaranteed to zoom in on the solution. It did work for me, though, which is what made me hopeful that it might do likewise for the OP. That said, it may be a real slog to work through all the scheduled tasks until the offending one is found and fixed. You never know what's going to happen in cases like these, until you dig in and start working. So thanks for pointing this out: it should prepare the OP to deal with the situation at hand.