XCode and me

I hope someone will reserve a very special place in hell for the designers of XCode. About once a year, you are focrced to update to the next XCode version, although the current one just works perfectly. And after upgrading, something usually stops working. This time, the buttons in XCode for verifying and uploading the project were simply disabled / grayed out. No hint, no message, no error. Just a grayed out button. No mention in the documentation. I now wasted hours of work just to find out the reason for this. Fortunately, we have google and stackoverflow today. Otherwise, I would probably still need a few more days to find the problem. Thanks, Apple.