I can not delete the files in Winodws 8 - Windows 8

In the "Libraries" folder i have four blank files, and when i deleting/opening them there is no response. i just upgrade to windows 8 beta from windows 7 Ultimate, maybe the beta version is not so stable.
How can i get rid/hide these files?

I am badly bored by these folders as well, I don't even know how to change the address of this folder to my documents folder. I think Microsoft forget the settings of that. Damn it.

Hi,

Have you tried to delete the folders in Safe Mode in Windows 8 beta， or you can restart your computer to have another try.