Copied your post from the other thread into here:

Quote Originally Posted by Jordan View Post
If your launcher is loading, but when you hit play you get the version check error, look at the launch version at the top. If its an old version, from January, or blank, that could be the problem. My computer that I played beta on was stuck on January version. My other PC that I installed FFXIV much later on updated the launcher to February 2014 right away. The current launcher should be 2014.02.26.0000.0001 - I simply took all the files out of the boot folder from my good PC and moved them with a USB drive over to my other PC and bang I had the current loader and it started downloading the patch. I will see if I can link to the launcher files somewhere. Again, you need launcher version 2014.02.26.0000.0001 . The files in this folder need to be updated :


C:\Program Files (x86)\SquareEnix\FINAL FANTASY XIV - A Realm Reborn\boot

I just copied all 8 files over to the other computer. You may not need them all, but I didn't bother checking if you only needed this or that.
If this really is the problem then that would explain why mine isn't updating. My version is stuck on 2014.01.18.0000.0001