"I don't know if anyone else has clearly explained that when you power down your Wii console (red light not orange) that you have to remove your 4GB non-HC SD Card before you power up and access your RB2 game.
I have been successful doing the following: I power up the console, insert the disc, and select RB2. I then let the game reach the "Loading" screen. Once I reach the "Loading" screen, I then insert my 4GB non-HC SD Card, hit my A button, and all is well.
The "Loading" screen is a pause point in the game that forces you to "Continue" by hitting the A button. It is the screen right after the Rock Band 2 + screen and the one right before you enter into your play options (career, quickplay, etc.).
I also want to suggest that while you're in RB2 that you go into the Options/Data Manage screen and manually Save the game to ensure you've properly captured your progress.
Hope this helps... I saw others having issues when they too powered down and this appears to work without a hitch. I will agree that you don't have to do this when you "orange light" or sleep mode your console -> what happens when you hold the power button on your controller in order to shut the console and controller off. I believe when you completely shut down, the console memory (RAM) gets cleared and that creates a start from scratch scenario."
Hope that helps.
If anyone plays online, I'm desprete for an online band. :P
I can pass expert on Guitar/Bass.
Haven't touched Vocals
And Everysong on Hard/Expert on Drums.
I own all of lastgen systems as of October 2008. (Finally got a Dreamcast)
I own every currentgen system except PS3.
