apt-get update returns:
W: GPG error: http://ppa.launchpad.net trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D46F45428842CE5E
i've tried:
sudo apt-get clean
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys D46F45428842CE5E
also tried the fix for bug 1263540, all without success.
fairly new to ubuntu too.
Any ideas?
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