I have the same problem with the Mandolin 100bpm soloist. About 9 times in 10 it causes an out of memory message. About once in 10 it doesn't and I tend to thank my lucky stars, save it to wav and export to Sonar. The same soloist, however, has a tendency to drop out for random bars here and there - these are not musical decisions, these are simply bars of music missing (e.g. in the third of a four bar phrase). When it does generate a solo but drops a bar along the way, the air may turn a little blue ...

This is clearly not a real out of memory issue, as my machine does this with virtually nothing else running and has 4gb of memory installed.

Not tried Bob's solution, but I will the next time I have occasion to use this soloist.

Brian