Skipping Movie Scenes

I am trying to modify a movie playback by using a .edl file and a mixture of cut and mute, but I am running into a problem.

For simplicity here is an example of what is going on.

In the .edl file I can enter:
10 12 0
which properly cuts the scene.

In the .edl file I can enter
20 22 1
which properly mutes the scene

But if I combine the two:
10 12 0
20 22 1
It locks up the playback. Sometimes I can still here the audio, but the video freezes.

Any ideas? Also, if there is a better way to mute and skip scenes, please advise.

Thanks.