ok thx

I am like literally the wrong person to ask that, I don't use Blender and if you don't talk about GR2 files from Larian games then the answer is "no, not with that tool" since all GR2 files are different and no, I don't know whether it's possible or what other tools there are.

Yes that's normal, that topic is from 2015 after all ;)

http://larian.com/forums/ubbthreads.php?ubb=showflat&Number=619296&page=8

On that page is the current unpacker linkage by Norbyte

Describe your problem then ;) But I doubt I am gonna be able to help you if it's got anything to do with Blender.