I wanted to get your feedback on KStars FITSViewer tool. Currently, it you make any modification to the image (like auto stretch, histogram, rotate...etc), the FITS image is marked as modified and if you try to close it it warns you that it has unsaved changes and whether you want to save. However, I never saved any changes myself as I just use these filters/operations to preview stuff (it's a _viewer_ after all). So I plan to disable the save confirmation and just close the FITS file with its original contents unless the user explicitly saves the FITS file (by clicking on the save/save as icon or from the file menu).
I don't need it either. If I want to edit te FITS I use a separate tool. It would be nice if we could still have "autostretch" enabled in the preview. This is, if you intend to change the GUI for the viewer. If not, then just disabling the save dialog is fine.
PS. After the issue with the crashing of the fits viewer I switched to standard Ubuntu 15.04 and no problems there.