To uninstall an add-in go to videos click on this...you should get a list of add-ons. Now go to the one the hasn't got a pic, hover over it now press menu, you now get a box come up. Now press add-on information and this will bring a box up, make a note of the (Author)you will need this its important. Now go to uninstall and click ok, this will clear the add-on. Now go to system, click on it click on add-ons then click Get add-ons, now the Author part you need to scroll down until you find the name click on it then click on video add-ons and look for the one you unstalled and reinstall it. Please before you do this do a dummy run 1st just to check good luck...