WamBamManBlam

I'm working on a project right now, and videopad is eating up all my disk space. I've cleared the cache multiple times, but it only seems to clear up some of the files and not all of them. 

Whenever I try to export my project to YouTube, a window pops up after a few minutes that just says "Failed." 

Is this a problem with YouTube, or is there something wrong with the editor? I know you can export the project as an MP4 and upload it, but I'd rather not do that since the video's quality takes a hit. 

I keep getting this bizarre error whenever I try to export my project directly to YouTube. Any suggestions on how to fix this?