Thanks Andy..I have already tried this. When it reaches "00000Z", it saves. When I ctrl Y, it gives me the error.

Here is something else to think about..I have multiple data directories. This file is fine the the other directories. In this directory, however, we are trying to convert some data in from our DOS based software. I checked in another directory (that hadn't been converted into) and it will let me add the '00000a' index. This is the only "unique" index on this file.