Merged from AT and game won't update..

Just merged my AT account to here, and logged in on the game, came up with an updater, after it asked to restart the game but it had a pop up saying

" The file "F:\3.3.5\Wrath of the Lich King 3.3.5a\WoW.exe" is read only and cannot be overwritten. Please try installing to a different location. (ConflictManager::DeleteFile)"

What do I do?
>_< Thanks.

Log in with username not email.

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Originally Posted by anyone0

Log in with username not email.

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Lets me log in but no geared characters are there. Warmane account is different to my AT account soo...?

When I log in using my Warmane account (that should be merged with AT account) there is no characters on each of the 4 realms, what is happening? Bug?