Video Preview Error
Since the 2017 update, Premiere has been failing when rendering a clip preview.
The workaround is to choose a Preview File Format and Codec in the Sequence Settings that does work (AVI or Quicktime).
I-Frame Only MPEG resulted in the specific error shown in the screenshot, but all of the P2 DVCPRO and GoPro Cineform variants give a similar error.
