I have a client, where for a couple of companies, I cannot export the customer or ship-to records.  When I attempt to export my customers, the screen that shows the records, the first record should be customers, but it only shows a "-".  If I look at attempting to restrict the fields, all the fields appear to be available, but the when I attempt to export, I receive the following message:

"Arguments are  of the wrong type, are out of acceptable range, or are in conflict with one another."

Any ideas?