ISO Files are not being recognized

My directory structure looks like this:

G:\Movies_ISO\A_BEAUTIFUL_MIND\A_BEAUTIFUL_MIND.iso
G:\Movies_ISO\AEON_FLUX\AEON_FLUX.iso

and so on.

I set the folder setting to G:\Movies_ISO\ and Media Companion says that there are no movies in the folders.

What am I doing wrong?

Thanks for the help.