Unable to Export Membership Data

I am trying to export membership data to a CSV file. I get the message "failed to export membership data" from MLS. I am running MLS version 3.42 in windows 7. I just reinstalled MLS 3.42 but that did not help. I have admin rights in MLS. Has anyone had this problem or know of a solution. Thank you.
Jeff

I forgot to mention that it creates a file called "membership" but the file has only 50 names.

Where are you saving the file? Win7 can get into a snit about files being saved to any directory reserved for programs such as C:\Program Files

Otherwise, it sounds like you may have corrupt data. What you can try to do is do a MLS backup, move the Units folder to somewhere else, and then fire up MLS and do a restore. (note this will affect all units that share your MLS.)

Thanks for your reply. It was corrupt data. Not a windows 7 issue.