Got suddenly the same issue yesterday.
I use the Adobe CS6 suite.
By updating Resolume with the DXV export plugin for Adobe, I lost the possibility to import the DXV files into Premiere and After effects, but was still able to export them.
I have now deleted the Resolume DXV Files folder there also: C:\Program Files\Adobe\Common\Plug-ins\CS6\MediaCore .
And it works, I can import and export again.
Maybe it can help Adobe CS6 users