Hello,
 
I have a problem with a project that crashes on load in Sonar Pro latest update.
I can open it i Sonar LE, and there I can see that Track 6 is all messed up, which is probably the reason Pro crashes.
Look at the picture and you'll see what I mean. If I touch the track in LE it will crash also, so I can't delete the track in LE and the open it in Pro.
The question is can I disable the track before loading the project or am I screwed and have to start over the project?
 

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All versions support a safe mode by holding the SHIFT key while opening the project. Whether safe mode helps in this case, IDK but it is worth a shot.

I agree with scook try opening in safe mode, typically when a project crashes when opened it is a plug in that's causing it or possibly even corrupt data.
try opening in safe mode.
by the way...whats on track 6 ?

I have tried Safe mode with all plugins cancelled but it still crashes.
On track 6 I have rapture sessions instrument. The project plays in Sonar LE with sound from track6, so I think it is the projectfile that is somehow corrupt. I have more tracks with Rapure sessions in the project and they are all fine.