I am having an issue with Photoshop CS4 were I can not turn 3 photos into HDR. It goes through the merging, aligning and cropping processes, but when it's supposed to go to the screen where it previews before it converts, everything just disappears. The tool bars are still there and work, but there is no picture. The weird thing is that I can make an HDR image out of one RAW photo bracketed, no problem. I can't figure out where the photo is going or what I'm doing wrong. Please help!!