All user folder icons showing as generic folder icon

Hi all,

I have an issue where all the folders in my User folder are the generic folder icon (e.g. not the pictures, music, desktop specific ones etc).

This seems to not just be in my user area, but an issue with Finder, as when viewing my Mac mini's folders from my iMac (the iMac is the one with the issue), the icons look generic also. But on the Mac mini itself they're fine.