Sorted it, a quick unplug and plug-in of the breakout box cable was all it needed.
It confused me a bit at first because the power light was on but the CMSS light wasn't - as if the drivers weren't installed properly.
Looking forward to some FNGâ„¢ now.
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More x64 news...
"Windows XP64 is a non standard OS, Canon says"
http://www.theinquirer.net/?article=24004 