As far as I know there is nothing bad between Nole and Rusty, they may have not been best of friends at the beginning but their relationship involved nicely in the last 5-6 years.. They played Hopman cup in 2011 at the same time.  A friend of mine from Australia said that Rusty sometimes does commentary for the Australian TV during AO and he had nothing but nice things to say about Nole.
This is what happened:
Tennis Australia apologised for the snub, attributing it to a “production error.â€
“Due to a production error unfortunately the wrong video was shown on the night. Novak’s message was recorded on a different day to the other players so there were a couple of versions made. The full version, which included Novak, went up online last night and we’ve apologised to Novak’s team,†a representative told news.com.au.
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All the best to Lleyton, it was nice to see his family, his kids take in the farewell festivities.
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