This software is very convincing, and though the preview may seem a bit choppy at times, the exported media is generally of very high quality. With normal resolution images, I have never found any problems.

But now I have made a pan through a large Panaroma image (24000 px width, 2000 px height) that previews just fine - but when I try to export, no matter which format I choose, I will see the export progress window for a short time, then the export seems to finish, but there is no resulting media file (and also no error message).