makemkv too old error after downloading newer version

I can only tell you that the 'index out of bounds' error happens usually when a stream is created, but it contains no subtitles at all, or just pointers to non-existing bitmaps. If that's not possible with the MKV created by MakeMKV, then there is a bug in MakeMKV, and you should contact its authors. That works perfectly with the subtitles directly extracted from the (properly decrypted) original European BD. You can then use Subtitle Tools -> Convert Subtitles to 3D with the right 3D-Plane (see the 3D-Planes numbers in tab 1 of BD3D2MK3D - Do not trust tsMuxeR!). Just launch BDSup2Sub (with Subtitles Tools -> Open Subtitle Stream in BDSup2Sub), and export a new SUP file with the forced subtitles only. So, if BD3D2MK3D has properly demuxed the whole stream, you can normally simply extract the forced subtitles from the full stream, with BDSup2Sub. Anyway, if I remember correctly, there is only one subtitle stream for a specific language, and the Navi forced subtitles are simply included in the complete stream and tagged as forced. I'm not sure why it doesn't work with the MKV source, but it is possible to extract them properly from the (decrypted) BD. The Avatar subtitles are known to be problematic, probably because they are included two times (in the AVC and MVC M2TS files), and that confuses the demuxers. I've attached the error message that popped up during the 'Generating project' stage, as well as the log file. It completes the process and the resulting SBS MKV looks fine, but it gives errors during the process, which show that it fails the track containing the forced-only Na'vi subtitles. Now we get to BD3D2MK3D - it seems to work fine for the subtitle track with ALL subtitles, but it doesn't work for the forced-only Na'vi subtitles, which is what I want. There is a subtitle track with both all subtitles and Na'vi subtitles, and a separate subtitle track for the forced-only Na'vi subtitles. Watching the MKV out of MakeMKV, it seems okay and plays without problems.

However, it did complete apparently successfully. Like the US copies, MakeMKV had no problem with creating a backup but ran into 'trying to work around' issues when making the MKV.

I finally got a copy of Avatar that kind of seems to work, after trying 3 US copies I gave up and imported a UK copy. I use this great program for all of my 3D Blu-rays, with the MKV mode.

Makemkv too old error after downloading newer version