Most cakewalk problems are due to incompatibility with the version of windows you might be using.
If this is the message you get before it crashes,
'An application error has occurred and an application error log is being generated.'
Here's what you can (should) do:
1. search for drwtsn32.log
2. See if it did generate this file and search the file to see if it shows
the sonar executable as the cause of crash.
3. If yes, there're several ways of debugging this problem and fixing it.
The problem is because sonar made a request for memory
with the MEM_TOP_DOWN flag set. A bad pointer was returned,
causing the Dr. Watson error message. (You really don't need to understand this
sentence)
Easiest thing to do to fix this is, get the latest service pack of the windows version you're using
(if you're using win2000, get serive pack 3.0) and your problem should be gone.