Hi - I am very new to Aperture and have hunted high and low in all the forums to find an answer to this question but so far have not found one, so here goes: I have Aperture installed on both my new imac and year-old macbook (both Leopard and fully updated). I have imported photos from my iphoto library (which Set Up Assistant migrated over from my MB) into Aperture on my imac successfully, choosing to move the masters to my Aperture library there because it has a much bigger hard drive. I have neatly filed them into projects (and into blue albums within those projects) and adjusted them to my satisfaction. I then exported each project to the Desktop and then, being careful to close Aperture on the imac, brought the project onto the Desktop on my MB via my network. I then opened Aperture on the MB and imported the project from the Desktop. I could see that the project obviously had contents because of its size and it took a few minutes for it to be imported. But the project has no images in it! I have checked that the images in the imac Aperture are not referenced images so this can't be the problem and I have no problem exporting and importing images themselves - just the whole projects. I expect there is an obvious answer to this but I have tried in vain for several hours to find it so I hope someone here will be able to help.