So, pointing pro_format_dir to a wtpub:// folder is presenting success for some, failure for others. Success shows the User Formats in WC in the folder browser, failure shows only the System Formats in the loadpoint.
Registered server names are identical, formatted as /X-Y Company Name/Libraries/..../Formats. The option was originally in the config.sup, I've moved it to the config.pro for testing. Research shows most successes resolving this were from correcting server name spelling and case errors, but it is persisting here. Error outputs are providing no help.
Any help or experience with troubleshooting further is appreciated.
Okay, I think I have this resolved. Rubber mallet works every time. I've reset all server info from scratch, and that seems to have done the trick. There had to have been some misspelling or syntax anomaly that I just couldn't see.