Open up your playonline folder in windows explorer(orwhateverelseyouuse) and go to the Final Fantasy XI folder.
Most likely down at the bottom, there is a file called “Vtable.dat” Delete this. Now go to your start menu(orwhateverelseyouuse) and open up PLAYONLINE as administrator(do not open ashita). Go to “Check Files” and select FFXI from the drop down. Check files, wait, repair files, wait. Exit viewer properly
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The first thing you'll want to do is locate a file that we need to remove so that we can begin the process of updating.
Note there are a number of VTABLE.DAT files throughout the game folder; for the sake of this guide we are using the one in the default game folder.
Do not skip the Run as Admin step, it can cause problems.
You may also want to consider temp disabling any virus scanning software if you have run into problems before with updating files or other MMO file corruption.
Please click on the files to zoom in
If any problems are discovered during the file check, please select “File Repair.” If this still does not fix the problem, please re-install the software.
See you in game!