yab interfering with system shutdown

[clasqm]

I've been seeing my apps created with yab 1.7.5.2 interfering with system shutdown, giving the message "Application XXX has aborted the Shutdown Process". I was tinkering with my desktop applet Fuzzytime, which is designed to run ALL the time, so it always gives this problem, but it seems to be happening if any yab app is running: script, bound, built, makes no difference.