Well that's the thing it happened when upgrading medio. I can't undo it (there was nothing to revert after the upgrade which didn't finish) and furthermore I can't fully remove medio, it throws errors...I can reinstall it and try to uninstall it again and it does the same thing. I don't really know how to proceed and couldn't get any help from the author.
The biggest problem relies on the fact that I haven't yet documented completely all of my customizations made to the style as I kind of free-styled it. So I wanted to take those syndication threads, import them as posts in the same categories which I have already created on the new install to mimic the original and then I would just re-register all of the feeds. The other thread's I would manually re-create as they are for hosting support and I know how to do that. everything else I should be able to take care of. I'm pretty sure the damage done during the addon update was so severe that it wouldn't be feasibly possible to fix it though it may be that I'm not proficient with MySQL so this would be impossible for me to fix.