Program received signal SIGSEGV, Segmentation fault.
0x00da9330 in QString::operator== (this=0x8563f00, other=...) at tools/qstring.cpp:2105
2105	tools/qstring.cpp: No such file or directory.
	in tools/qstring.cpp
(gdb) bt
#0  0x00da9330 in QString::operator== (this=0x8563f00, other=...) at tools/qstring.cpp:2105
#1  0x0807842a in findSimilarTileset (this=0x8574da8, map=0x83dd548) at mapdocument.cpp:276
#2  Tiled::Internal::MapDocument::unifyTilesets (this=0x8574da8, map=0x83dd548) at mapdocument.cpp:308
#3  0x080a6dfe in Tiled::Internal::QuickStampManager::selectQuickStamp (this=0x83fec18, index=1) at quickstampmanager.cpp:140
#4  0x080ab8ea in Tiled::Internal::QuickStampManager::qt_metacall (this=0x83fec18, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0xbfffdf08) at .moc/moc_quickstampmanager.cpp:77
#5  0x00e688ca in QMetaObject::metacall (object=0x83fec18, cl=56, idx=4, argv=0xbfffdf08) at kernel/qmetaobject.cpp:237
#6  0x00e7b6ad in QMetaObject::activate (sender=0x8157718, m=0xf940f8, local_signal_index=0, argv=0x840c278) at kernel/qobject.cpp:3280
#7  0x00e7e5a3 in QSignalMapper::mapped (this=0x8157718, _t1=1) at .moc/release-shared/moc_qsignalmapper.cpp:101
#8  0x00e7f7ed in QSignalMapper::map (this=0x8157718, sender=0x83fb728) at kernel/qsignalmapper.cpp:266
#9  0x00e7f9ce in QSignalMapper::map (this=0x8157718) at kernel/qsignalmapper.cpp:257
#10 0x00e7fa9b in QSignalMapper::qt_metacall (this=0x8157718, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0xbfffe05c) at .moc/release-shared/moc_qsignalmapper.cpp:87
#11 0x00e688ca in QMetaObject::metacall (object=0x8157718, cl=56, idx=8, argv=0xbfffe05c) at kernel/qmetaobject.cpp:237
#12 0x00e7b6ad in QMetaObject::activate (sender=0x83fb728, m=0xcf1c64, local_signal_index=0, argv=0x840c278) at kernel/qobject.cpp:3280
#13 0x00aca607 in QShortcut::activated (this=0x83fb728) at .moc/release-shared/moc_qshortcut.cpp:130
#14 0x003a292b in QShortcut::event (this=0x83fb728, e=0x0) at kernel/qshortcut.cpp:399
#15 0x00361fdc in QApplicationPrivate::notify_helper (this=0x81014d0, receiver=0x83fb728, e=0xbfffe488) at kernel/qapplication.cpp:4396
#16 0x0036804e in QApplication::notify (this=0xbffff354, receiver=0x83fb728, e=0xbfffe488) at kernel/qapplication.cpp:3798
#17 0x00e62b3b in QCoreApplication::notifyInternal (this=0xbffff354, receiver=0x83fb728, event=0xbfffe488) at kernel/qcoreapplication.cpp:732
#18 0x003a376d in sendEvent (this=0x810157c, e=0xbfffe8a4) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#19 QShortcutMap::dispatchEvent (this=0x810157c, e=0xbfffe8a4) at kernel/qshortcutmap.cpp:879
#20 0x003a559e in QShortcutMap::tryShortcutEvent (this=0x810157c, o=0x81644f0, e=0xbfffe8a4) at kernel/qshortcutmap.cpp:364
#21 0x00369c52 in QApplication::notify (this=0xbffff354, receiver=0x81644f0, e=0xbfffe8a4) at kernel/qapplication.cpp:3840
#22 0x00e62b3b in QCoreApplication::notifyInternal (this=0xbffff354, receiver=0x81644f0, event=0xbfffe8a4) at kernel/qcoreapplication.cpp:732
#23 0x00361b9e in sendSpontaneousEvent (receiver=0x81644f0, event=0x0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#24 qt_sendSpontaneousEvent (receiver=0x81644f0, event=0x0) at kernel/qapplication.cpp:5388
#25 0x0041e69d in QKeyMapper::sendKeyEvent (keyWidget=0x81644f0, grab=false, type=QEvent::KeyPress, code=50, modifiers=..., text=..., autorepeat=<value optimized out>,
    count=<value optimized out>, nativeScanCode=11, nativeVirtualKey=50, nativeModifiers=8192) at kernel/qkeymapper_x11.cpp:1867
#26 0x00420b49 in QKeyMapperPrivate::translateKeyEvent (this=0x8139690, keyWidget=0x81644f0, event=0xbfffef6c, grab=120) at kernel/qkeymapper_x11.cpp:1837
#27 0x003f4387 in QApplication::x11ProcessEvent (this=0xbffff354, event=0xbfffef6c) at kernel/qapplication_x11.cpp:3429
#28 0x0042436a in x11EventSourceDispatch (s=0x8105268, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#29 0x0162b855 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#30 0x0162f668 in ?? () from /lib/libglib-2.0.so.0
#31 0x0162f848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#32 0x00e91565 in QEventDispatcherGlib::processEvents (this=0x81020c8, flags=...) at kernel/qeventdispatcher_glib.cpp:415
#33 0x00423be5 in QGuiEventDispatcherGlib::processEvents (this=0x81020c8, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#34 0x00e61609 in QEventLoop::processEvents (this=0xbffff264, flags=DWARF-2 expression error: DW_OP_reg operations must be used either alone or in conjuction with DW_OP_piece or DW_OP_bit_piece.
) at kernel/qeventloop.cpp:149
#35 0x00e61a8a in QEventLoop::exec (this=0xbffff264, flags=...) at kernel/qeventloop.cpp:201
#36 0x00e6600f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#37 0x00360e07 in QApplication::exec () at kernel/qapplication.cpp:3672
#38 0x080691f1 in main (argc=1, argv=0xbffff494) at main.cpp:128
(gdb)