I've done a bunch of googling and have seen references to the problem, and even saw something about in the FAQ, but my attempt to fix it hasn't worked. Zoneminder running on Ubuntu server w/ Apache. Everything is working so far, except when I go to define the zone, the image is blank so I can't adjust the points.
Pretty sure it's not the actual file permissions, I set the whole 'images' directory to 777 and still no dice. The 'events', 'images', and 'sounds' directory are running off of an NFS share. When I go to the images directory, I can see the image that it's supposed to be displaying, the screenshot of the camera. However, when I grab the image link out of the source from the 'zones' page and try to open it directly, I get a 404 not found.
Seems like there's some sort of simple setting I'm missing, but can't figure it out.