I think something is really messed up in the ffxivconfig.exe.

When installing FFXIV the 1st time the default settings for the language is Japanese... So, I have simply changed the language to Japanese and its working... but, when setting it back to English, it crashes!

So the culprit is >>>>>>> ffxivconfig.exe <<<<<<<<

I cannot seem to find the registry entries for FFXIV in regard of configuration, I wonder how it gets hooked up.

Note: Copying data files from my Laptop did NOT resolve, so its not file corruption.