Can't apply layer mask and save document
After creating a layer mask to cut out a building on a photo, I applied the layer mask and dragged the layer into a new PSD document. When I tried to save, it gave me an error message and would not save. I then tried simply selecting the building by clicking on the layer mask and pasting it into a new document. Once again, got the same message. Tried creating a new document from current state and applying layer mask and saving; got the same error message. No problem with Save as long as the layer mask remains. Can anyone tell me why?
