the similar posts on this complaint are two years old and might now be out of date,  REAL downloader was working just fine up until a week ago, but ever since then,  I have been getting this annoying warning message popping up:

UNABLE TO DOWNLOAD,

I have updated REALplayer, I have fumble around with the settings, but NOTHING!!  This happens not only on YouTube but also on all other video sites as well.  And this stupid problem recurres occasionally every 1-1/2lf to 2-years and it is getting very frustrating and disparaging!!!