Updating Child/Master link in code

[aggieval]

I am having an issue with a form that has run correctly for months and is now not working. Based on data entry in the main form, I am updating the record source of a subform that is not linked to the main form. I have been telling the subform to set the linkedchildfields and linkmasterfields = "" otherwise it will default it to a related field on each form. Now this doesn't work on my clients computers (it still works on mine).

Has anyone experienced this or have any suggetions. I am thinking is may be a setting on the database or form.

Thanks.