Hi,

While building a custom build ( MATE ) I modified the uodate file successfully, but when I then run apt-get update i get the following error.

Reading package lists... Done
W: GPG error: http://repo.mate-desktop.org wheezy InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 68980A0EA10B4DE8

I do not know anything about what could be causing this error any help would be great!

Thanks!