Using 9.3.1 and a 9900 record input, I have tried:
input from SDE
Input from Personal GDB
input from dbf table
Output to table (dbf)
Output to Personal GDB table
Output to SDE table
Also, I have tried using different input and pivot fields, though of course, this is rather pointless as I need to use certain ones. I always got the 210 error, except once (I believe one PGDB to PGDB try) when I got no error but no file.:p
However, I also recently discovered that my license was set to ArcView rather than ArcInfo by mistake. With ArcInfo, or maybe just because it's Thursday, it worked today on my second try...just as I was about to agree with you that it never ever works. I still don't believe this should be this difficult. I wanted to avoid using Excel to do this.