I changed the directory name of the project I am working on.
 
In X3e and in Newberryport, I get a popup that tells me the path is incorrect.
 
In X3e I click OK and carry on as normal, pick something else, create a new project, whatever.
In Neumannypot I click OK and it crashes - the Fault Reporter wants to start.
 
Oh! And when I restart, everything in the File menu is gray except Start Screen, Print Setup and Exit!
And when I Exit, it asks if I want to save changes to Untitled.
And when I say no, it crashes again to Fault Reporter.

I found the problem.
I have just tried opening the project.
 
This time I noticed at the bottom in the Windows bar is a second item with the Sonar symbol, "Multisample Not Found". Moving the Sonar window away reveals a message box that says it cannot find \MyKit\BD.sfz - I have to click OK for each drumkit instrument it isn't finding, then finally the project opens normally, all audio tracks are there and I can close the project without a crash.
 
What fooled me was the warning message box opening BEHIND Sonar.
 

Ah, the ole hidden pop-up will get you everytime.

jpetersen
I found the problem.

 
Still, it shouldn't crash.