Jazzmandan,
Thanks for your help. Unfortunately, I am a bit of a novice with regard to BIAB and RB. What does CC and OP stand for in your post?
As I said to Mario, I am using my Line 6 UX2 interface as a soundcard with Windows 7 OS. I created the tracks in BIAB, then opened them in Realband to generate a fiddle solo. I did not import a midi file.
I have dragged and dropped the rhythm tracks, drums, guitar, strings and organ that were created in RB into Sonar X2 with no problem. I then came back to RB to generate a Fiddle solo, which I will then drag and drop into Sonar, which led to this issue.
Thanks,
Ralph