Canon ip4600

[Hellfire29]

I just bought this printer and expected to be able to print onto disc. Unfortunately whoever wrote the drivers didn't expect someone to use the supplied disc tray. Whenever you try and print, the drivers respond with "Close the inner cover". Unfortunately, the only way to use the disc tray, is to open the inner cover, as is shown in the manual. If anyone has this printer and has managed to print onto a disc, please respond and tell me how!!
If I can't get it to print, then I'm going to have to return the printer because this is the only reason I bought it.