That was WITH that option disabled. I read that solution in another post, and was trying it out, so I had re-installed 18. Without that option disabled I had hourly crashes.
I just know (1) viewer froze (2) I found three copies running (3) I killed the three copies AND the frozen viewer instance and (4) happy after that. You have more expertise than I do - maybe you can come up with a better explanation, but i can't. I just know, x happened, y fixed it, and if x doesn't happen again I'm fine.
As mentioned previously, the viewer was FROZEN, period, full stop - attempting to close the floater wasn't going anywhere, because it just was NOT responding. I had to use task manager to "end" the three copies of slplugin.exe AND the stalled viewer process.
If I haven't given you enough info to track down the problem, then I'm sorry. I can always go back to (15) and not be a bother anymore.
