I've been having this problem for about 2 months now. I have cleaned all my cache and cookie files, run every scan I can think of, updated everything, and uninstalled and reinstalled SA several times with the same result. I open it and the screen says loading (or whatever it says) and after a few seconds of the loading screen, it immediately closes. 

It looks like I'm not the only one to have this issue are there any solutions? 

Thanks for any help you can offer,

DJ