Warcraft 3 MODs

you have to buy and replace the mole with another item, then you can buy it again.

Never heard about this problem. I don't know if this is related to non steam or not.

maybe you missed this: non steam is not supported. The error occours because the non steam version does not support all commands that the steam version does.
Forget about it, no one here will help you with this problem (exept maybe other nnon steam users that still don't get into their brain that we ...

non steam is not supported

Are you running an non steam or cs 1.5 server?
If no, what metamod version are you using?