: Patch still not up yet. Will follow up with more info when available.
According to hmxsean
at the Rock Band forums, a new rotuine update for the PS3 version of Rock Band is available which resolves a number of issues surrounding guitar controller compatibility.
To quote: Available today is a routine update for the PLAYSTATION 3 version of Rock Band that addresses a number of items related to guitar controller compatibility. Should Rock Band owners choose to obtain the update, they
will need broadband internet access connected to their PLAYSTATION 3.
The update will be downloaded once the game is started.