Hello Halabut,
I recently bought a Wiring Mini board and hooked up one of these mcp3208's to it .. using the same code you provided. It compiled with no errors and successfully uploaded to the wiring board. It doesn't seem to work though. All I see in the serial monitor of the Wiring IDE is either 0 or 4095 ... and the occasional random number every once in a while.
I'm using the same pin #'s ... 10,11,12,13
It works 100% on my arduino.
thanks,
Phil