A old client of mine has come to me because most of her product images have stopped being displayed on her site.
After some investigation it seems that if a product image is a png file, it displays, if it is a jpg it doesn't.
Jpgs that are part of the theme (e.g. the credit card symbols in the footer) are showing ok.
I've flushed the images cache. The permissions on the media\catalog\product.. folders are set to 0777. The files are definitely on the server and the product page seems to be calling the correct file. I can't see anything wrong with the pathing.
I've deleted one and reuploaded the same image to the same product as both jpg and png, and only the png will load.
See this product for example: http://www.justcardsdirect.com/happy-anniversary-no-verse.html
Can anyone suggest what I could try in order to fix this? Thank you.