The tool, in general, is simple in its GUI yet excellent for MKV operations. Version 5.0.1 worked very well on my iMac i7 computer. However, on a clean system installation, 5.2.0 crashes all the time. I hope the programmer will fix this problem that seems to be related to /usr/lib/libSystem.B.dylib according to Console (but doesn't affect 5.0.1 at all, however).
+1
MKVtoolnix
Little Snitch
Konsti rated on 10 Oct 2011
[Version 2.4.4]