Red frames when encoding with Adobe Media Encoder

When I encode a file (ProRes 422) to H264 (mp4) with Adobe media encoder (v2017.0.2) red frames show up in the video. While the master file (the ProRes 422) is completely fine. Also, when I export my timeline in Premiere (v2017.0.2) directly to an MP4 it is completely fine. I have this exact same problem with exporting to MXF files.

So its looks like the problem is Adobe Media Encoder. Are more people having this problem, and how can I fix it? At this point I cannot use Adobe Media Encoder, which is a shame...

I use an iMac with macOS Sierra (v10.12.3) Late 2015.

The footage is from a Sony FS7 camera (.MXF)

Thx,

Hans