Version:           trunk rev 1111899 (using KDE 4.4.2)
Installed from:    openSUSE RPMs

while trying to reproduce Bug 231950 this happend:

0	raise	/lib64/libc.so.6	0	0x00007fffefa44975	
1	abort	/lib64/libc.so.6	0	0x00007fffefa45e76	
2	qt_message_output(QtMsgType, char const*)	/usr/lib64/libQtCore.so.4	0	0x00007ffff74b53d4	
3	??	/usr/lib64/libQtCore.so.4	0	0x00007ffff74b5589	
4	qFatal(char const*, ...)	/usr/lib64/libQtCore.so.4	0	0x00007ffff74b5715	
5	qt_assert(char const*, char const*, int)	/usr/lib64/libQtCore.so.4	0	0x00007ffff74b575a	
6	KisTileHashTableTraits<KisMementoItem>::clear	kis_tile_hash_table_p.h	225	0x00007ffff697f00a	
7	KisTileHashTableTraits<KisMementoItem>::~KisTileHashTableTraits	kis_tile_hash_table_p.h	75	0x00007ffff697daa3	
8	KisMementoManager::~KisMementoManager	kis_memento_manager.cc	76	0x00007ffff697abab	
9	KisTiledDataManager::~KisTiledDataManager	kis_tiled_data_manager.cc	96	0x00007ffff69754e3	
10	KisDataManager::~KisDataManager	kis_datamanager.h	48	0x00007ffff6a12cf8	
11	KisSharedPtr<KisDataManager>::deref	kis_shared_ptr.h	220	0x00007ffff6a12d5e	
12	KisSharedPtr<KisDataManager>::deref	kis_shared_ptr.h	227	0x00007ffff6a11f0e	
13	KisSharedPtr<KisDataManager>::~KisSharedPtr	kis_shared_ptr.h	107	0x00007ffff6a10cce	
14	KisPaintDevice::~KisPaintDevice	kis_paint_device.cc	181	0x00007ffff6a0a148	
15	KisPaintDevice::~KisPaintDevice	kis_paint_device.cc	185	0x00007ffff6a0a1e2	
16	KisSharedPtr<KisPaintDevice>::deref	kis_shared_ptr.h	220	0x00007ffff6999a94	
17	KisSharedPtr<KisPaintDevice>::attach	kis_shared_ptr.h	400	0x00007ffff6998a6b	
18	KisSharedPtr<KisPaintDevice>::operator=	kis_shared_ptr.h	131	0x00007ffff69bbc49	
19	KisLayer::updateProjection	kis_layer.cc	361	0x00007ffff69f8e48	
20	KisAsyncMerger::startMerge	kis_async_merger.h	197	0x00007ffff6a30a46	
...	<More>