Hello, i found a bug with Krita 2.7alpha. If i crop and save an image i get a black image. https://vimeo.com/61610548
In your video you save as a *.psd This bug sounds related to Bug 313300 - "single-layer images are saved wrongly to psd"
Yes, David, i think you are right. That's the problem.
Marking as duplicate. *** This bug has been marked as a duplicate of bug 313300 ***