I\'ve seen several posts on google and stackoverflow related to this error, I\'ve read all of them but still fetching the problem , I will be glad for a solution. Here is th
If other people have tried all the other answers and it still isn't working, try opening up the .xcodeproj file with your favorite text editor and searching for the name of the class that's giving you trouble. Make sure you close Xcode before doing this. In the file, there should be one line for the .h and another line for the .m. If there are duplicates, remove them, save the file, and re-build.