In order to try and find out what happened, you might want to check out the Windows Event Viewer
Look for Sonarpdr.exe, right click on the red icon, Copy -> Copy Details As Text.
Thanks...
 
 

Does this crashing take place with other tracking settings than mic/V-drums as well?
Is it (seemingly) independent or dependant on what kind of project you're running, what VSTs are included and what you're tracking? 
Did you install any new stuff or updates prior to the occurrance (is that a word?) of the problem? I understood you never experienced this earlier, so something must be different now...
 
You have an RME so I assume it's a normal mic you're using, not USB (sorry, had to ask :o)
 

Hi Kalle,,
My platform is generally extremely stable, but the crashes seem to happen when recording MIDI or when using my Waves GTR plugin if I recall correctly.  The Waves GTR plug tends to be unstable enough over the years to dissuade me from using it.  I also could have a USB both are on different USB ports, but I have noticed flakiness when using both simultaneously. 
 
Switching to a different guitar amp sim & not using my control surface when recording MIDI seemed to be a good workaround until I can figure out the underlying issue. 
 
I'm not using a USB mic - I generally use a Neumann TLM102 or Rode NT-2.  I was more curious whether it was possible to reimport the MIDI data into the project, as I was able to do with the audio data, but it sounds like that's not possible.
 
Thanks Alex - I will look into the Windows event viewer to help isolate the issue.  Where can I find Sonar's crash dump in case I want to send that to Cakewalk Support?
 
 
Thanks All!
Russ
 

I think you can only send Sonar crash dumps if prompted. Cheers.

I have come up with a solution to the issue of how Midi is hidden with in a CWP file. 
You can take a CWP file, open it,  and if you save it as a MIDI file it will store just the midi data. I do this to "future proof" my projects. Now the Midi data could be opened in any DAW. 

Cactus Music
I have come up with a solution to the issue of how Midi is hidden with in a CWP file. 
You can take a CWP file, open it,  and if you save it as a MIDI file it will store just the midi data. I do this to "future proof" my projects. Now the Midi data could be opened in any DAW. 

I totally get that idea although I'm not doing this myself. It actually would be a nice feature to have this happen automatically for backup purposes (keep the project file format as it is).
 
However nobody knows when MIDI and indeed the MIDI file will become obsolete, it will happen one day, but unlikely any time soon (30 years of MIDI now).

It's funny that the 2 file formats I have used the most since my first Computer (Atari) in 1985 both MID and TXT can still be opened on any modern computer, PC and Mac and even Lynux. 
 
I don't save every project this way, only the ones I'm making my backing tracks with. I put a lot of time into the drums and that is of the most value to me. Audio seems to be saved as you go and is easily retrieved, but I put more time into MIDI on some projects and it sucks if that is a "hidden" entity by my software. Therefore the 15 seconds to do the "save as mid" is worth it to me. 
 

Hmm this would be perfect for a CAL script (that's if it hasn't already been done):
http://books.google.co.uk/books?id=AYYLAAAAQBAJ&pg=PA448&lpg=PA448&dq=save+tracks+to+MIDI+cal+sonar&source=bl&ots=Mzv_MhA9gk&sig=x3MZGGPltsyLPvjgog6BrR6f2Ps&hl=en&sa=X&ei=rADSUoiQFIGrhQfbk4HYCA&ved=0CGkQ6AEwCA#v=onepage&q=save%20tracks%20to%20MIDI%20cal%20sonar&f=false