Just as another suggestion: can you not simply select the photo you'd like to print, choose the option to edit it in Photoshop, and then rather than making any edits, simply use Photoshop to set up your print (or iPhoto, or any other app that seems to work properly)?
I haven't had a look at Aperture since practically the day it was released, so I can't remember if this will cause Aperture to automatically create a new "version" of the image whether you actually perform any external edits or not, but it seems like a possible workaround..
Have to say that aside from this quirk, version 1.5 is looking very tempting.. I've not been terribly happy with Lightroom.
EDIT: Now that I think about it, it occurs to me that with 1.5's new 'referenced' file system, one could in fact, simply open the desired image directly in the printing app of your choice with no trouble at all and totally avoid the possibility of having a redundant 'version' created by Aperture.. very interesting.. (and I suppose you can do this even with a managed Library by simply digging through the Library package for the image you want). Anyway, just thinking out... loud(?) here