What program are you trying to use?

Chrisbliss18: I tried various editing programs hey used to work.
I used to run them through the seqencer in blender, also avidDV,UleadVideo Pro,and others, now nothing will save the two together. Is it possible to have turned something off. I've tried going to the system, but found nothing.I used to have sound settings when I set up my video config in the sequencer in blender. Other programs crash.

I'm not fully understanding what's happening. Can you work me through the process?

How did you previously save merged files?
When you work through the same steps as before, does it give you an error now?
You say that you can save audio or vidoe, but not both. How do you save one or the other?