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Couldn't load a xcode project because it is already opened from another project or workspace

I have a project that has one target dependency. The target dependency is dependent on a framework called Three20.

The dependency tree looks like this.

myProject    -> myCustomFramework          -> Three20 

When I tried to build and run I get the following error message.

Workspace Integrity Couldn't load Three20.xcodeproj because it is already opened from another projet or workspace.

I have only one project open. Any suggestions on why I am getting this message?

like image 588
David Avatar asked Jul 25 '11 18:07

David


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2 Answers

I had the exact same problem. Quitting the xcode completely and opening it up again worked.

like image 149
user906825 Avatar answered Oct 22 '22 13:10

user906825


Quitting Xcode alone didn't work for me. What I did was:

  1. File->Close Workspace/Project on every open workspace.
  2. Xcode->Quit
  3. Open Xcode again and open troublesome workspace
like image 42
Adam Waite Avatar answered Oct 22 '22 13:10

Adam Waite