As you may be aware, Google are closing version 2 of the YouTube API. As a result, some YouTube features in cuteTube will no longer work. I am currently in the process of re-writing cuteTube to use the QYouTube, QDailymotion and QVimeo shared libraries that I wrote recently. I am hoping this work will be finished within the next couple of weeks. The new client application will have some feature changes, including the ability to extend the list of supported services via plugins.
So it looks like you'll have to do without your YouTube fix for a few weeks, at least!