ios - xcode 4 fails to initiate unit tests (with linker error) after I created a new scheme

Question

My unit tests worked fine in xcode4 until I had to create a new schema to compile a package to run on my device for testing.

All I did was creating a new Target and a new Scheme, now I try to run the unit tests and get the following error:

The test bundle at [...]Tests.octest could not be loaded because a link error occurred. It is likely that dyld cannot locate a framework framework or library that the the test bundle was linked against, possibly because the framework or library had an incorrect install path at link time.

What did I break?

question from:https://stackoverflow.com/questions/6302362/xcode-4-fails-to-initiate-unit-tests-with-linker-error-after-i-created-a-new-s

Answer 1

I've also run across problems with Xcode 4 after adding a target to an existing project. I eventually figured out that the Xcode DerivedData for the project was damaged. By deleting that data, I caused Xcode to rebuild the data and the project returned to normal. I found the data in my home Library folder (~/Library/Developer/Xcode/DerivedData/).