AE Output Module "ignores" Audio Output

Hi!

I have created an output module as seen below. The "Audio Output" box is checked. Almost everytime I render a file there's no audio in the rendered video.... When I put the comp into the render queue, go to the output module setting, uncheck the "Audio Output" and chek it again, it works fine.

How can I tell AE not to ignore the settings in the first place? It is kind of annoying to have to uncheck/re-check everytime.

Anyone who knows what to do?

I am working in CS5 (10.4.24), Windows 7. It can't be the hardware, just changed the PC....

Thanks a lot

Herwig