>I copied data from production backup to my local drive. Every time I'm trying to do either ProcessNewTrans or LoadNewTrans on a big file I get this error when I run the process the second time. I'm using private datasession (session class), Delete ON, tablevalidate = 7
>

I've been fighting this error with a couple of clients. In one case, it seems to have been the machine. With the other, we think it's a network problem.

You'll also get the ISO error if an index is corrupt. Make sure you've rebuilt all the indexes from scratch (not just REINDEX).

Tamar