I am currently on the MacOS 15.0 Developer Beta and successfully installed Xcode 16 beta through Xcodes which renames the Xcode App to Xcode-16.0.0-Beta. I am trying to open Xcode 15.4 (which I just reinstalled and is also renamed appropriately to Xcode-15.4.0) but every time I try to open this version of Xcode I get the following error: This version of Xcode isn’t supported in this version of MacOS The older Xcode versions (15.4 and below) have a slash through their icon and will not open either. I have a few coworkers who have also encountered this issue. Based on an earlier post, it sounds like we should be able to run both side by side on the MacOS beta. Is this indeed the case or is there some issue surrounding this? Earlier post