Not sure if this is the right place to put this, but I have generally found Predator (original or 2) to be pretty stable. If I edit a patch and try to do a Save As in the plugin, GP crashes instantly, the plugin sticks around for a few more seconds. The second instance, a simple on rackspace plugin to handle the page turns going to Mobile Sheets, was unaffected.the first time this happened. I was able to relaunch GP and it loaded the last saved version of the gig file and played notes in the selected rackspace, but it would not respond to mouse input, MIDI program changes from MobileSheets, or anything else.
The Save As functionality on Predator 2 is available without issue in Forte and Cantabile.