Hi !
after a very hard day trying to fix the same Problem, i finally solved it for me.
what i did:
tryed the shift – trick – did’nt worked.
uninstalled and installed – did’nt worked.
removed all plugins except Looks – did’nt worked.. and tried a lot other stuff.
then i copied my hole plugins Folder from my second Computer (updated there as well – and there it worked) and after that it worked on my main Computer.
i thought – there is one plugin who makes Troubles and removed/added plugins.
and after i copied an older Version from Red Gate Mojo from my Laptop to my Computer – everything worked. After that i copied back my current Version of mojo – and every file was the same then before – except now all plugins are availible !
1 note: also a few plugins from misfire and mojo/Cosmo was also hidden.
I hope that this will help anybody. so there is really something strange in the Caching mechanism of premiere – so try to move and copy some files arround and that you don’t have to waste so much time then i did.
thomas