Hi,
The reason the display of the image errors is like this is because of the way the error message given to the Errors and Warnings system is formatted. It's a simple fix, it just didn't get done prior to the last release. The image path does actually show up on the Mac version, simply because the Mac OS list control formats text differently to the Windows one.
The idea of the Errors and Warnings window is to, at some point, let you double click on an error and have the relevant node focussed on in the network view. At some further point it should be possible to have it remove errors and warnings from the list once they've been fixed up. We've kind of done the basic stuff for this, just haven't had a chance to flesh it out yet.
Regards,
Jo