Thanks man! I guess I will just wait it out and see. What a PIA. Not sure if I even want to go back to 9879, but the idea that it won't let me is driving me nuts. lol!!

I was on 9879, but it started getting buggy. I just realized the app store isn't working either. I get a similar error code. Did you just upgrade to that preview build or have been running it a while?

I was forced to do a clean install of 9841 this morning. Computer started acting crazy using 9879. Actually I think I messed around with it too much. :) Anyhow... Reformatted my hard drive, clean...