Admin Tool Error

Just trying to run Admin Tool to run a conversion program but got the msg DataAdminMenu.w was not found - changed the Start in directory for the shortcut to the directory with the file in it but then got Invalid Version, 17391 (expected 1005) in object file d:\Epicor905\Server\lib\GetVersion.r.(2888).

I am guessing that something somewhere is expecting an old version - but where and how do I change it?