Do you have a virtual directory in IIS pointing to the CFIDE folder? Do you have permissions set up properly on this folder?
This really isn't a CF issue at all. It's all IIS. IIS isn't serving the image. CF has nothing to do with that.
CF is working properly as long as it's serving CF pages. There are several things that can cause the CF Administrator not to work, but it's just a web application like any other.
You might want to read the CF 9 Lockdown Guide, which talks about securing the CF Administrator. The reason I mention this here is that it sounds like your CF Administrator shouldn't be able to run at all (based on the virtual directory hunch) so you may be able to glean a bit more about the problem from that.
Dave Watts, CTO, Fig Leaf Software
Hi Dave and thanks for the input. Yes to pretty much all of your answers. Virtual directories are setup, and everything works fine except IIS can't deliver GIF, PNG, and other graphic files. In fact this is setup identically to another existing server, same configuration. I tend to agree it's an IIS issue, except it's only the CF Administrator site, with the same permissions as any other site. Any other normal CF site runs fine.
Given it's the same setup as another production server, I've tried to copy every setting and every permission possible. Uninstalled and reinstalled everything short of the OS, all to no avail.
With your feedback I'm going to double down on my focus on permissions. Perhaps it's something so obvious I can't see it..