VSTs not loading

[bbreakz]

Hello... this isn't a problem specific to Mulab, but half of my vsts on my Mac(El Capitan) don't want to load anymore. I haven't made any drastic changes lately that I can think of, but its happening with FL, Mulab, Bitwig but not* Ableton for some reason.

FL only says plugin failed to load, but when I was rescanning in Mulab it says the vst plugins aren't valid and crashes after a 'Cant get core function pointer' during scanning.

With bitwig it says 'not a plugin file' and cannot read metadata.

Has anyone had a problem similar?
I've never had this issue before.

Even if I re-install the plugin which I have multiple times already, it still doesn't work.
Its about 25 of them that this is happening with.