Some avi's, when loaded in TMPGEenc 3.0, doesn't make vobsub start.
But vobsub does start when the avi is running in any player.

It's happend 4-5 times with different avi's
I've compared those avi's with others in gspot, and there is nothing unique
about them.

This problem doesn't appear in TMPGEnc 2.5

Is it a bug, or is there a solution ?