Include Headers from added frameworks on Xcode

Question

I want to work with some frameworks like glew and cg so i manually added

the needed frameworks to my project by right clicking the project ->

Answer 1

In my case I had to update a framework version, so I just replaced the .framework in the filesystem and then I got the error you've mentioned in the question.

Removing the framework and adding it back again, playing with the search paths and all the other suggestions didn't help.

Eventually, cleaning the build folder did the trick:

Select "Product" from the xcode menu, hold the option key and click on: "Clean Build Folder".

After that I built and ran the project successfully.