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

objective-c ios xcode three20
David picture David · Jul 25, 2011 · Viewed 40.3k times · Source

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?

Answer

user906825 picture user906825 · Aug 31, 2011

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

Related questions

How to change the background color of a UIButton while it's highlighted?

At some point in my app I have a highlighted UIButton (for example when a user has his finger on the button) and I need to change the background color while the button is highlighted (so while the finger of …

Read More
Xcode - ld: library not found for -lPods

I get these errors when I try to build an iOS application. ld: library not found for -lPods clang: error: linker command failed with exit code 1 (use -v to see invocation) Ld /Users/Markus/Library/Developer/Xcode/DerivedData/Totalbox-clpeqwpfvwuhpleeejnzlavncnvj/Build/…

Read More
Linker Command failed with exit code 1 (use -v to see invocation), Xcode 8, Swift 3

I can't get rid of this error! I have tried all sorts of things like clearing Derived Data(Preferences->Locations->click gray arrow to open Derived Data folder in Finder->right-click, move to trash), cleaning the project(…

Read More