Created attachment 106099 [details] Backtrace of Dr Konqi because sendind the error via Dr Konqi failed mutlipletimes I was just saving the project and exiting Kdenlive. After the next restart Kdenlive asked me to restore the last session or don't, if I openign the backup version all transisions where mixed up and some where missing. If I don't restore the last session and just open it, everything ist fine. Also I had a temporary bug, that I was not able to click Compositing Transissionnodes and Kdenlive was crashing instantly. The crash can be reproduced every time.
*** This bug has been marked as a duplicate of bug 378469 ***