@LexManos - Thanks for the fast response, much appreciated. I reverted to an image from two days ago and started dropping in the updates one at a time, starting with FML and testing in between, the last change of a dozen or so...(would have to be the last one I tried, couldn't have been the first, that would have been far too convenient)...regardless, it appears that MPSA (An addon for Machine Muse's Modular Powersuits) caused the issue. This was listed as a recommended download on the Machine Muse site, alongside the Modular Powersuit mod itself, so I had automatically grabbed them both. Sorry to have hassled you. After 2am here, time for a crash of another sort.
@TheEntireDEVTeam - Keep up the awesome work, a lot of us have been enjoying the results of your efforts for a very long time.
Now...if I could break my children of their DireWolf20 addiction, or atleast lessen the frequency of them using 'Taaaaaaake it easy', I would really have something! They are excellent vids though, so I can't blame them overmuch.
Best Regards,
Mac.
cmpteki@yahoo.ca
Edit: New release of the offending jar already enroute, the revision I had downloaded earlier is now listed as 'debug - do not use' Thanks Again!