Dreaded "avrdude: stk500v2_ReceiveMessage(): timeout" with MEGA 2560

Development Tools IDE 1.x
1

This is a brand new R3 retail box. I just can't seem to upload anything other than the Blink sketch. I'm not new to Arduino, so I know what I'm doing.

My UNO works flawlessly on my Mac with IDE 1.0.5 and OSX 10.9. So it's not the computer or configuration.

I can select the right board and serial port and upload the Blink sketch, but anything other that the Blink sketch times-out with the "avrdude: stk500v2_ReceiveMessage(): timeout" message.

Loopback test works OK.
I do not have any "!!!" in my sketches or the libraries I've imported.

I've reset the board.
I've deleted my Preferences file.
I've rebooted.

Anyone know why I'm still getting the "avrdude: stk500v2_ReceiveMessage(): timeout" message and no sketch other than the Blink sketch uploads?

2

I hooked it up to my Uno and reburned the bootloader. Looks like it's working now. The bootloader that ships with the R3 doesn't work.