Problem with importing

I recently started downloading and importing various models and spell buttons from the site and from Hive, to use in a project im working on. It worked in the beginning, but something weird happened after I had got 4 functioning models ingame. Now, none of the things I import works anymore. The same thing is for the models I already had imported. It looks fine in the Editor, but when I test the map, the units dont have any models at all, becoming just a shadow. I have no idea how this happened or how to solve it, could some helpfull soul lend me a hand (and btw, yes, I have given the imported files the correct path)?

Try re-importing the broken models.

I did what you said, deleted all imported files and re-imported them. Wouldnt work for any of the models, or spell buttons either. I tried importing a few new models as well, but they had the exact same problem. Another thing is also that all the waterfall doodads I had put into the map stopped to work. Games tells me it is Unable to Load Waterfall doodad and all that.
Something must be wrong with that map in perticular. I tried Importing on another map, and there, it worked fine. Why not on the map I am working on? I have no clue.

it is most probably a bug in WE. maybe you have excadentaly deleted something, who knows, WE is a mysterious thing

Maybe it is, but I dont remember deleting anything of importance anywhere. It could be possible I have deleted something somewhere, but what should I do to solve it?