If the problem continues to occur, go to the next step. If the problem seems to be resolved, you can move the .plist file to the trash. If the problem still occurs, quit PowerPoint, and restore the file to its original location. If you do cannot locate the file, the application is using the default preferences. Start PowerPoint, and check whether the problem still occurs. If you locate the file, move it to the desktop. To display this folder, hold down the OPTION key while you click the Go menu. The Library folder is hidden in MAC OS X Lion.
