heroes 5 tribes of the east map editor problems

[johnnycage]

yesterday the map editor was working fine. 2day i went 2 use it and everything seemed fine except that there are no items listed in the object lists that u use 2 place items on the map i'm using vista and the toe patch was installed 2 weeks ago so the version i have is now 3.1 i've tried system restore and i've tried uninstalling and re-installing the game but the map editor still has the same problem.any clues on how 2 fix this