...and it's crashing on launch

Details:
- I *can* open n525
- n541 crashes at the "Loading: ColourFX" stage, just after the popup to allow network connections (a setting that's never remembered by the way, on any version I've used recently I get asked this at every launch - but that's a tangent!)
- System is a maxed out Late 2013 Mac Pro running 10.10.2 (it also crashed under 10.10.1 - I upgraded to 10.10.2 then tried again)
- Console log attached

CatalystPM 5.02_n541_HD_2015-02-14-221144_tincan.crash.zip

Thanks for any advice...

Tim