Lynsi Mocha

Hi there! Having issues with my mini map.....when i select it in my tool bar it won't stay selected, nor will my mini map pop open.....i tried using the command keys of control+shift+M but that doesn't work either. i also removed it from my tool bar and re-added it without any luck......i use my mini map all the time so some help would be great!! TIA Lynsi Mocha