For some reason, I cannot run certain programs(eg Skydemon Light) because I have to install Microsoft Silverlight. However I installed this a while ago aand when I try to install again, it tells me of course, that it is already installed. I have uninstalled it and tried again but still get the same result. I get the same problem with Adobe Flashplayer when I try to play news clips on the BBC website.
Am I doing something stupid? Please help.