Program hangs during "move fields"

I am trying to move the text of one field into another field using “Move fields.” The operation always bombs out or hangs up with an error message, “Database error.” I’ve restarted the program, run “recover,” etc., to no luck. I have X.1.0.1 on Windows XP. There are 13,900 references in the library, and the field in question only has limited text in it.

-Mike Smith