I have quite a few images on my site that I use in a bunch of different places, so it's important to me that they're kept as one file so that if I make changes to them later, it changes universally.. (that's part of the point of a CMS, right?)

I've been getting a random thing where some images work, but some don't. They might work on other pages. Instead of displaying the image, it's just imagename.jpg - if it's a link, then the text fits my css for a text link.

They all work in the content editor box.

Any ideas?