Thanks for your submission. We do not see this regularly happening within MediaShout. Usually, there is something outside of the program causing this issue. Even though you are on the latest version of Codecs, can you go through and reinstall them to make sure they are set the way we need them to be?
Here is a LINK to an article that answers questions about codecs and helps you download and install a codec package that we've found to helpful in resolving these issues. If you *CAREFULLY* follow these instructions, and you use the download link provided in the article, this should resolve your problems.
If you need assistance after you've downloaded this, please let me know.