thanks for the suggestion. I had a quick look in there but everything appears to pass. For some reason, I don't think it's the plug in, just it's root library reference structure.
I've managed to get Battery to behave itself, Kontakt 3 is a little more finicky but appears on the whole to work. Elektrik piano won't even let me in to it to try and change it's default library position... I can open it in standalone mode and then as soon as I hit file or go to the preferences... it locks me out saying "FATAL ERROR: Initialization failed! Nonexistent or Corrupt Library. Set the correct path in the options... etc etc" But it won't let me close that window to go in to the options as in it properly locks me out.
Trilogy is also really unstable now BUT Omnisphere rocks!
ps.. tried trashing prefs and repairing permissions etc.
pss.... why do germans have to shout in their error messages... FATAL ERROR VHAT YOU ARE TRYING TO DO IZ OUTSIDE OF ZE NORMAL OPERATING BEHAVIOURS...