thanx for post responses....
did look in the game folder and found 1 patch listed as "Corrupted"
so did delete that and attempted to repatch... unfortunately still got same Critical error box
So begrudgingly deleted all patches off

and do fresh install
Didnt sit and stare at the new install system doing its work, but seemed like it lumpsummed all the patches together and synched all of them together too, instead of individualistically. Unexpectedly, the process took only about 2 hours long.... works good now