CrazyFox, the client has noting to do with creating an account, if it was due to the client, then that would mean the client was hexed wrong, which means then the notice of Account Creation failed wouldnt come up which i doubt it is,
To fix the problem you will need to delete some file to make the account createion work again, i think you will need to delete the Id.DB/Id.DB.idx found here C:\mirserver\LoginSrv\IDDB and then restart the server and it should do it.
CrazyFox stop confusing people, you know jack s*it about these files, if you did then you would of known this issue as it used to be a really big one. so please stfu
Hope that helped anyways nick91/Candyman