Unknown MCU when compiling in Arduino IDE

[loquie]

I have been trying to get my DigiX working and am just trying to get basic code to upload.  Whenever I load an example and try compiling it I get the error "unknown MCU 'cortex-m3' specified".  This happens on the basic LED blink sketch as well as the basic DigiFi sketch. 

My setup:
OSX - 10.9 
Retina MBP
Arduino IDE - 1.0.5  (Fresh download/install)
Downloaded DigiXAddons-v06 and copied to Documents/Arduino/hardware  (but had to move files in hardware/digistump/sam up to hardware/digistump for DigiX board option to show at all)
Selected Digix board in Arduino IDE

[defragster]

       Based on this line: >> Arduino IDE - 1.0.5  (Fresh download/install)

Start here as noted on your Digix Silkscreen: http://digistu.mp/digix

First stop would be here: http://digistump.com/wiki/digix/tutorials/software

You should get to: 1) Download the Arduino 1.5.x BETA IDE from: http://arduino.cc/en/Main/Software (or on Linux use a package manager to do so)

And go from there in some fashion . . .  see if that changed anything . . .