CD Changer not detected (BlitzSafe)

Hi all, just installed my Nav-D and it works great, all systems are go. Except that when it comes on it says 'No CD Changer detected'.

So that tells me the unit is coded properly, its just not seeing my CD Changer.

I don't have a CD Changer of course, I am using a BLitzSafe adapter for my iPod.

Any tips on why its not seeing it?

John-