Slate Digital plug-ins blacklisted!?

Well not just you apparently

Unfortunately they never posted back once problem was solved (well, assuming it was)

I would probably try uninstall, rescan and make sure the blacklist is clear and then reinstall using latest installers.

Oh…and probably you only have 64bit installed so not relevant, but if you do have both on the computer make sure you’re not scanning the 32bit versions because your plugin paths got reset.