Beware of wireless mouse - it CAN and DOES corrupt. Distorted sound, racing, etc!!!
Thank you ALL who have helped me. I have my recording! - MOST, if not ALL, my problems came from my wireless mouse whose batteries were going out. I would still be suffering if I had not caught it in the process of corrupting an instrument file! Who can believe it? But believe it! The cursor kind of froze for a instant (and I was looking right at it) and boom - instruments coming in on Port 2 taking my valuable memory - and all kinds of stuff. A Mouse in the corner. . . a mouse. . . a lousey mouse. I used to think they were \"cute.\"