Persistant crashing in Logic 9

Guitar Rig 5 has been crashing my projects for a few weeks now, usually at seemingly random intervals, but now I have one project that is almost unworkable - sometimes Logic crashes as soon as I try to open it, or if I do manage to open it, as soon as I click on the Guitar Rig plugin it crashes.

I've installed all the updates in order, but the problem remains.

Anyone else having the same problem?

I'm on Mac OS X 10.6.8.

I have no clue what any of it means, but I've attached a log of one of the reoccurring crashes (computer specs and such at the bottom).

 

Also, I do apologise, I meant to post this in the Technical Issues section, but idiocy got the better of me.

If anyone could move it for me, it would appreciated.

 

See if this helps you at all:

http://support.apple.com/kb/TS3968?viewlocale=en_GB&locale=en_GB

 

Thanks for the suggestion, but I tried it and the issue remains.

The crashing seems to be specifically caused by Guitar Rig.