I had 2 balls (Cally Zs), the one I was using was almost full, and the program had an unexpected error during my swing. It froze up before the hit, and went to the Error / Close Window screen. When I restarted, it gave me the Last Ball warning with option to buy. I was still on the tee, and it still showed 1st shot.
I didn't realize it till after I had closed the Last Ball box, and restarted the program, again, to see if the Last Ball thing came up again (and make sure I hadn't just imagined it coming up). It did, and that's when I thought to right click and make a report.
I lost 3 Cally Zs in a row on Cong 11 the other day, so I really don't need to be losing them when I haven't even hit a shot that actually registered with the program.