Unable to Open Project

down vote
I came across this problem and my senior told me about a solution i.e:

Right click on your projectname.xcodeproj file here projectname will be the name of your project. Now after right clicked select Show Packages Contents. After that open your projectname.pbxproj file in a text editor. Now search for the line containing <<<<<<< .mine, ======= and >>>>>>> .r. For example in my case it looked liked this

<<<<<<< .mine
9ADAAC6A15DCEF6A0019ACA8 .... in Resources */,
=======
52FD7F3D15DCEAEF009E9322 ... in Resources */,
>>>>>>> .r269
Now remove those <<<<<<< .mine, ======= and >>>>>>> .r