I went back and stripped the timeline of all the stop triggers but one (I had experimented with putting a stop trigger every two frames to see if I could get one of them to work), so now I'm back to just one.
....and It seems to work.
The sym.play(45); now loops. as well.
It seems that you must use only one stop command or they all get invalidated. I'm still not understanding the stop functions, it would seem intuitive that you could put a stop on every frame if you wanted ( which would be ridiculous) but that any frame that was reached would respond with...well stopping.
but as I just found, if you use more than one stop on the timeline, the timeline ignores them all and plays to the end.......is this correct? (these are the results I have gotten, but I certainly don't think that it should be true as I will be needing to stop more than one time on any timeline).
Stumbling through the dark to find out definitively how things are supposed to work.
Thanks.