UPDATE: On the Develop Tab, if I disable Use Graphics Processor then the red cast also affects the Developer image. If I re-select Use Graphics Processor then the Developer image becomes neutral again (with the red cast still affecting preview images, the navigator and full screen.)
Is this the place to expect support from Adobe, or is more of a peer-support forum? I can't currently work like this so will need to raise a ticket with Adobe if this is not the correct place to expect official help.
Tried to raise a ticket with Adobe but their circular support system just dumps me back here - not impressed with that!
So - BUMP - I guess.
Regular posters - I'd really appreciate any ideas you can provide
Adobe Tech Support - If you're here - please answer the query as soon as possible as I can't currently work