I have been ftping images into the correct folder then manually typing the image name into the products image field with no probs since my site opened... now suddenly it doesn't work!?

In Firefox the image simply doesn't show or seem to be added, in IE once you manually type the name and select no the preview button doesn't work?

Any ideas what is going on and how to fix it?

The only possible change that could affect it is that I finally upgraded FF this week.. we are still running zen 1.3.0 while we sort through how to uprgade.

thanks

Kate