Hi, if you have older versions of Xcode installed, remove them. I ran into the same problem installing Xcode 15.4 on a new mac that I had migrated all content to from my old mac. And that migration brought over older versions of Xcode. After removing the older Xcode versions and restarting Xcode 15.4 the location files automatically appeared in the project debug location menu. Other things that I found in trying to figure this out was to look at file associations and clearing/removing those associations. Hope this helps.
JavaJoe
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