I keep getting this odd "Unable to Purchase" error. The error references Readability, but I have had this happen before. The error alert seems to pop up whenever I do something in the app store that requires a password. An alert will pop up saying "Unable to Purchase. Readability and 2 other items could not be purchased at this time. Please try again later." This error has been popping up for a few weeks now. I have also noticed that I will occasionally catch a little status bar on the Readability app like it is trying to update or install itself. I feel like the app was somehow caught in the middle of some sort of iCloud update, and it is always redownloading itself for some reason. The odd thing is that the app works perfectly fine. This alert is really annoying though. You will start entering your password in the app store, and then it will pop up right in the middle and cut you off. Has anybody seen this before? Do you have any idea what might be going on, and how to fix it?