MAC: Presets missing from bundled VSTi's

All the default presets of the bundled VSTi’s (Prologue, Spector, Mystic, etc.) have somehow disappeared recently.

I’m on Mac and I think this happened after the 5.5.2 update, but I’m not sure. What to do?

Bump.

Go through Mediabay and make sure the correct folders are checked and then let it re-scan them.