BDtoAVCHD crashes frequently with various conversions

[Yanta]

I notice that BDtoAVCHD uses a version of tsMuxer that is "as old as the Titanic".
This version frequently crashes when converting mkv to avchd.
It fails with error code -2 0xFFFFFFFFE, which I can't find any documentation on.
I thought I would try with 2.6.12 the last official release, or one of the nightlies.
BDtoAVCHD comes with v2.x in the installer, but I can't figure out how to make it use the later version. I guess that's an internal decision the program makes.

Any way I can force the program to use the later version to see if that solves the problem?

Or perhaps an alternative to BDtoAVCHD?

[Yanta]

nvm. I used mklink /d to point to the 2.x version but it didn't help.

I got around the issue using mkvtoolnix to combine the various parts that bdtoavchd had created