macOS Noobe question for Xcode 4

[SouthernAtHeart]

I'm getting a build error that says multiple build commands for output file...
I'm not sure what I did, though it still builds my little app and it runs ok.
Is there a way to just start a new project, and import the one interface window I made? I can copy all my AppleScript code from the old Appdelegete.applescript file to a new project, but I can't figure out how to copy the form or window that has all my buttons, text fields, and bindings.
Is this possible?
Thanks!

 

[Partron22]

Yes. Open old project and new project, IB windows. Select All in the old IB window. Can't remember if it's copy/paste, or drag to the new IB window that works, but one of them does, maybe both.

 

[SouthernAtHeart]

Yes. Open old project and new project, IB windows. Select All in the old IB window. Can't remember if it's copy/paste, or drag to the new IB window that works, but one of them does, maybe both.

Thanks, I'll give that a try.