Slideshow Module - Green cast when previewed of played.

I haven't used the slideshow module for a few years but I needed to for a presentation this evening. However, when I came to preview or play the prepared slides the whole thing played with a green tint to the screen. It's fine when simply in the Slideshow Module view but when you try to play or preview the show it's all green. Anyone else encountered this?
I finally succumbed to a workaround by exporting the images and resizing them to use in a Powerpoint show, which works perfectly!

Module View

Preview View

Play View