[Prince of Wales]

I have just installed Pro Tools 10 from the free PT 9 upgrade. (I uninstalled PT9 first btw). All seems to be well until I try and use a plugin. They appear in the plugin list and they 'loaded' when PT10 booted up. But I get the spinning wheel of death when i click on them and PT just hangs (not responding). I have installed the Avid Virtual Instruments but it's not just limited to those plug ins, it's all of them. I have installed PT10 and additional files inc Virtual Instruments onto my Macbook Pro HD but I'm saving the Session on a dedicated Audio drive (WD My Book Studio). That shouldn't be the problem though should it?

I wonder if they are in the wrong folder?

Thanks in anticipation...