an error occurred while opening codec for output stream #0.0

I just purchased a license for Total Video Converter and I’m unable to solve a problem. There tech support is not available right now and I’m really getting frustrated.
When I attempt to convert a video to a WMV-HD or MP4-HD I get the fallowing error message.
“An error occurred while opening codec for output stream #0.0”
I have downloaded the ffdshow codec’s thinking it would solve the problem but no luck.
Does anyone know how to solve this problem?
Running Windows 7 64bit.

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Says it might not like the parameters. Don't know about TVC. Not sure if the free Super* will run on Windows 7. Try it, it's free. One of the best video converters in use.
Scroll to bottom for download.

When you say "convert a video to a WMV HD or MPEG-4 HD" what exactly are the details of your source video?
This is an issue with your ffmpeg installation. You have a mismatch between the version numbers of the libraries you are trying to use. Most likely, your version of the webm libraries is not built on the same version of ffmpeg as you are using.

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