So I was trying to install skype on windows 8 earlier and kept getting an error telling me it couldn't install to my start apps. After a quick read of the error I did a quick fix that may help some of you. Before hand you will need to locate folder options and unhide your hidden folders. You can find it: Appearance and personalization -> Folder options: Below folder options you will see "show hidden files and folders.
Once you have done this go to C: Drive and unhide Program data. All installls will go smooth after that. I hope this helps.