After upgrading to the beta OS, Macos Catalina, I cant seem to open any projects in my Xcode (both Beta and nonbeta versions). Having said that, after some investigation (https://stackoverflow.com/questions/57019534/i-cant-open-xcode-project-after-updating-to-catalina) it seems that I can open projects that are in my download folder. However, the Stackoverflow answer stated that deleting the derived data should solve the problem however I have not seen that solve my problem.