Thanks one and all
PROBLEM SOLVED!
I re-ran the VST scan with "Re-scan failed plugs" and "Re-scan existing plugs" checked.

That did the trick!
One interesting note, Slate and LXP were in the first project I loaded in "Hodgkins".
My other iLoc plugs appeared to be unaffected (meaning they still were in the Plug-in Mgr play list); go figure.
I did un-install, re-install LXP 32 bit, but that had no effect.
Fortunately I didn't have to lug the Cat into the office after all.
I'll update Platx64 tomorrow (fingers crossed!).
Again thanks to all!
T