It appears that if the user roles are utilized and the form is published on a shared folder, everyone who will ever need to open the form is requiered to be given access permissions to the publish location. Otherwise, an on load error prevents them from using the form.
Your user name or group membership cannot be verified because the form's
security settings do not permit it
This seems to be proved by the fact that when publishing the form locally on their drive, they can use the feature without any problems.
If this is true, is anyone aware of exactly what rights should be assigned to the external users (read/write/execute?). Are there any work arounds? In our case we will need users from other domains to access the form and I'm not sure I can explicitly give them access permissions to the shared folder.