mp4, mp3, WAV files can't import at all (We were unable to open the file on disk)
WAV files aren't showing up on the importer browser, as if it's an unsupported file.
mp4 files only show this error when trying to import:

I have no idea what is happening. looking through the forums, none of it actually relates to my issue since this occurs with an mp4 file that is downloaded from YouTube. And also an MP4 file that was rendered out of after effects, and out of premiere. None of them worked.
Also I've tried moving the file to a different disk, both external and internal. Nope
There was a mentioned problem with WMVCore but I have reinstalled all of Premiere, and installed WMVCore twice without that changing the ultimate result. Windows was installed first on this device last thursday, and premiere was last installed today.
Help
