SOLVED! At least my Crashing problem is solved…
I removed all of my plugins and added them back one-by-one with enough testiing between each move.
It turns out that the plugins that caused my crashing was due to bad Indentation of pcb Refresh!!! Just needed to indent to correct position and Bingo, no more crashing.
I’m not completely finished going through them (just did the one’s I often use so, if it happens again, I’ll re-post…
As of now my plugins work without Crashing when re-opening PCB and Projects/PCB’s.
My plugins include:
- embedded action code
- running external App’s
- tweaking Footprints, layers
- calculations, text replacement, graphic tweaks…
- track and pad tweaks…
- calling wx, Tkinter Graphics, windows and Message Pop-Up’s…
FOLLOW-UP…
I went through all of my Plugins and found only the one mentioned having Refresh with incorrect indentation. After fixing that, and going throung many Usage-Tests, Open, Close, Open-other Projects and challenging my plugins to Crash, No Problems 
. So, conclude it was my Oversight at not seeing the indentation of Refresh in one plugin was not consistent with my other plugins, even though that plugin worked.