i cant edit a photo unless i rastersize it 1st. it is also being called a smart object. this has never happened before so why now? have i accidently pressed something?
Smart objects needs to rasterized to be editable. You have probably dragged an image into your open PS document or placed an image using File/Place, that will turn the dropped/placed image into a smart object (there are also other ways to do this). Smart Objects are awfully clever, I could write about them all day, but check out this link instead (sorry, a bit lazy today ) : http://helpx.adobe.com/en/photoshop/using/create-smart-objects.html
perfect thank you =)