A short tip for all users who needs the NVIDIA filters and the DDS file support in Photoshop CC:
- Create a directory called Filters in the Plug-ins folder of your Photoshop CC installation.
- Copy the NormalMapFilter64.8bf file from the Photoshop CS6 Filters folder into the new Photoshop CC Filters folder ("64" in the filename represents the 64 bit version)
- Copy the dds64.8bi file from the CS6 File Formats folder into the existing Photoshop CC File Formats folder
Now all filters should work as expected.