This is an issue we are hearing about with some Canon drivers.
ColorShuttle will output the target image with no color management automatically, but it is up to you to find the place in the driver (your Print Dialog window) where you can turn off color management. With some Canon drivers this is not at all obvious, and in very rare cases there is no way to turn off color management at all.
But try this:
If you have a Main screen, look for a Color Mode -> Set button, choose the Matching tab, then choose “No Correction.”
Also, if your printer has a linearization routine or a self-calibration procedure, you may need to turn this off in order to turn off color management.
Then print a target and before you send it into us, see if the print passes the “yellow square” test mentioned in the instructions here:
http://www.colorwiki.com/wiki/Maxwell_ColorValet_Pro#The_yellow_square_test
In most cases, if that yellow square is 100% yellow, then that is confirmation that color management has been turned off.