I also used to have that problem. I would write songs that would contain 120-140 measures at a time. The buffer would definitely get full as just described. I had to save songs to disk and then intialize to reclaim space. Sometimes, the DATA THIN function works. Be warned however. The DATA THIN function may also not work id the data buffer is full as well.

Getting an XP60 helped alleviate this problem for the most part. The increased memory really helped. The fact that I write HUGE arrangements is why in fact.

The Infamous Epu.