Access violation in ffdshow.ax

[Slave01]

When i open mkv movie (matroska splitter 11-10-2005) with zoom player (4.51) and ffdshow (13-10-2005) and reclock 1.5 beta 8 a screen appears: Access violation in ffdshow.ax...sometimes it doesn't appear but most yes. I use ffdshow for audio decoder also. What can be the problem?

Greetings
John Slave