Re: Upgrade to Leopard...
No problem! I also hope we can figure this out...
I'm based in the UK - it's 2am here - so I'm gonna sleep on this now and will post here again tomorrow.
In the meantime, if you haven't already, go to the apogee website and check for and install the latest drivers for Leopard.
Also, do you have any other music related apps on your system? Reason, etc...?
btw, don't move the component folder - just the files within it and then restart and the mac and then try Logic again.
Also, check your Applications/Utilities/ Audio MIDI setup - just have a look... :-)
p.s. stay positive. At worst if nothing works, we'll go the route of formating your HD and re-installing everything from scratch - but hopefully there's an easier solution before we get to that stage!
And even we do need to do that, I'll let you know how to backup all your important plug-in presets, your own created apple loops & Logic samples etc. :-)