cross hint:
I haven’t installed Cubase 6 trial yet, but I had another issue which made Cubase 4 crash:
OSX 10.6.7 upgrade…
If you per occasion during the last days upgraded too to OSX 10.6.7 older Versions of Cubase (meaning smaller than C5) won’t work anymore!!!
The last working OSX version which is compatible with Cubase 4 or SX3 is 10.6.6.
If you use one of these Cubase versions DO NOT upgrade to 10.6.7. If you have 10.6.7 try to downgrade to 10.6.6 (by first installing OSX 10.6.x off the DVD and then running the 10.6.6. combo upgrade…)