Something similar is happening to me. I recently purchased BD Copy/Ripper. I'm using 10.0.7.7 x64 on Windows 10 Pro to rip Blu-Ray Knight and Day using MKV, H264, CRF 18, 5.1 Multichannel, AAC, subtitles mode Remux into file. After a few minutes DVDFab says the rip was successfully finished, however the progress bar is still at 0% and there is no file outputted. I have also tried with Transformers: The Last Night and Spider-Man Homecoming with the same result. Attached is the internal log.