When I try to import my iPhone camera pictures to iPhoto I get this message:

It worked great yesterday...

Help?

EDIT:
I can import them using the app Image Capture, but when I try to open them in Preview I get this error:


I have no problem opening them on my iPhone.

Well.. isn't this wierd?

I can actually import pictures from iPhone when not connected...!
Maybe iTunes mount a fake Apple iPhone with the camera pictures and forgot to unmount it??

EDIT:
A restart did the trick