Ok I own both JP and NA versions of FFXI. I've been using both for years now whenever I want to switch between versions. The registry keys have been set up properly and worked fine for a while now. However recently I suppose from updates in FFXI software or something, problems have arisen.
At first I was receiving an error which stated that:
The File "PlayOnline Viewer Tetra Master.msi" was not found.
I was offered a manual input for the pathway. I was completly unable to find this file so I gave up playing FFXI for a few days. I started messing around with the registry keys and found that if I renamed the folders and fixed the pathways to connect to "Playonline\SquareEnix" rather than "PlayOnlineJP" or "PlayOnlineUS" the error message for manual entry to the pathway of "PlayOnline Viewer Tetra Master.msi" did not show and POL Viewer booted up just fine. However there was a new bug that I am now entirely stuck at.
The US Version works just fine now. I can run and play FFXI on it whenever I like. The JP Version however is encountering a serious bug. When I start up the JP POL Viewer it works just as normal until I hit Play on the FFXI screen and the FFXI screen attempts to Launch the program freezes. I am fully able to Ctrl+Alt+Delete out of the program but the JP FFXI itself will not launch and gets stuck every time just before the screen for "Accept or Deny the POL Liscence agreement" would pop up.
I've never encountered this error before and like usual, PlayOnline's FAQ and live support was absolutely 0 help to me completely unable to give me even a slight smidgeon of information on how to fix this situation. I've also been completely unable to find any record of this happening to anyone else.