I'm not sure if this is the correct place for this question but here goes. I can't get the dialogue box to open in Merge to HDR Pro in CS5. After I import the files it seems to go thru the process but then PS just goes blank as if I just opened it.
Proper place is the photoshop forum.
You could try and replace the preference file and see if thats the culprit. On windows hold down ctrl, alt, and shift key at photoshop's bootup. I don't know the Mac's equivalent. You can also search for the preference file itself and delete or move to a safe location and let photoshop recreate the file. By moving the file, you can always put it back, if your not sure whats happening.
I am having the same problem. The photos go through the process of merging to HRD and then disappear, this is so frustrating.