I'm on Ubuntu 14.04 Unity, Krita 2.9 Beta 2 (git 74993bf), I stumbled on a crash on exit Krita and since the backtrace is flagged with 3 stars I thought to share it. Hope it makes sense. (See backtrace in comment below) Reproducible: Sometimes
Created attachment 90779 [details] Crash on close with backtrace 3 stars - BACKTRACE
Hm... What where you doing when you closed Krita? Which tool was active?
I'm sorry, unfortunately I can't remember the active tool at exit... I'm recalling what I did. Please, consider that I'm not completely sure these have been the only actions. And in fact it seems I'm not able to reproduce the crash by following these ones: 1. I opened a kra file with multiple layers (rasters and vectors) 2. I went on Layer > Import/Export > Import Layer... to import a previously saved Group layer (as .kra file) 3. I did some R+Click over canvas to select both the imported layer, the canvas background and again the imported layer 4. I switched to the "Transform a layer or a selection" tool and I shifted the imported layer over center > Apply 5. Flatten Image 6. I switched to the "Crop the image to an area" tool, set fixed ratio to 1.78, clicked and dragged the handles of the box to adjust the crop area > Crop Image 7. I exported as jpeg 8. I closed the document, without saving 9. And I closed Krita
*** This bug has been marked as a duplicate of bug 343719 ***