Users will receive a ".xml already exists" or a "site doesn't exist" error message when submitting. This is not actually the case as I have verified that there is no file in that list with that name. I can submit the form on their behalf without any problems.
I have recently started working on my works sharepoint site (2 weeks experience now - newbie) and I have been making a lot of positive changes whilst learning a lot about sharepoint. I have created these forms in infopath which were working PRIOR to me wiping permissions on the entire farm. I restructured all the permissions which seem to be working for 90% of the site now but unfortunately users other than IT cannot submit forms. I have made a library with "Intranet visitors" that have access to adding list items (same custom group prior to my farm permission wipe). But the forms will not submit, and the error message doesn't look like a permission problem. I have manually added a test account to the list permission with full control, logged into a PC as that test account and tried to submit the form; same problem.
Is there some "write" permissions for intranet shares that I need to set? This is really puzzling me and draining my day by researching into it without success.