I have the las version, 2.1.1 (x64) and when the track is a DTS the track is not played, only silence. This occurs when I create a Blu-Ray with tsMuxer.
Hoever with media player classic home cinema I have not any problem and with my stand alone player I have not problems.
I am using windows 8.1.
EDIT: I have tried the version 2.1.2 x86 and the problem persists.
Thanks.