Assimp64.dll corrup0ted or not found

I am using the master branch and am having trouble with ofxAssimpModelLoader. Even if I generate the 3d model loader example I get the same error. I get the following error (I am working on windows 10).

LNK1107 invalid or corrupt file: cannot read at 0x350 assimp64.dll

The file is there and valid and I have also run the download libs script again in case.

I also tried to copy the libs from the release as well but no joy.