I just downloaded a skin, but when I try installing it it says "The file you tried to load does not appear to be a valid Messenger Plus! skin pack." despite I downloaded it off here http://www.msgpluslive.net/skins/view/2-GreyTucan/ and it says it's compatible with versions 8.5 and upwards & it's fairly new. I have the latest version of both Windows Live Messenger (8.5.1288.816) and Messenger Plus! Live (4.50.0.312), so I have no idea why it's not working. Has anyone else had this problem? Can anyone help me?

Thanks for any help in advance.

Works fine here. Try clearing your browser cache and download it again.