3ds max import problem! "improper file format"

I have a problem with the files that are in .3dr (from 3D Ripper) or in .3ds format. I've never had this error before. Im trying to import them into Max but i always get this error : "improper file format". I used different .3ds and .3dr files and i cant understand why i get this error everytime i try to import a model.

I dunno did you tried to reinstall 3DRipper ?

and about 3ds I have same problem sometimes with 3ds's from Zmod

when u install 3D Ripper it also ask u to install .3dr plugin for you versionof 3ds max did u done it?

This happens to me when i try to import gta cars with kams script

that is another problem,gta cars done in zmod2 can't be loaded in 3ds
to load them u need to open the car in zmod1 and delete collison,shadow,chassis_vlo and dummyes u only need geomtry parts in the dff and u have to export like a vice city dff and then u coulb be able to load it with kam's script

I solved the problem. I reinstalled 3D Ripper and this time i put a checkmark on the .3DR Plugin for Max as Neos said. Thanks dude!

no prob