SupportAssist update not instaling

Hello, Dell pushed an update for SupportAssist earlier this month, but it doesn't seem to install. It starts updating automatically when I open the app. So good so far...and thats exactly how far it goes. I can see is downloading two things(can't really tell what, since these packages ar so smal) and right after that the cancel button greys out and it says "Downloading and installing SupportAssist start-up files". It is already doing this for about 1.5 hour.... Can anyone offer a solution?