When opening existing project and selecting to use existing kdev4 file, project directory name is forcefully used instead. Example: You have directory named "src" and in it you have file "blackHole.kdev4". Press "Open Project" select "src" directory, Kdevelop will recognize file "blackHole.kdev4" and will ask you if it should be used, when you select this file and press "Finish" the error "Project file 'src.kdev4' not found, closing project..." will be shown.