Please look for the original report on launchpad at:

https://bugs.launchpad.net/ubuntu/+source/qtcreator/+bug/983179

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I am on Ubuntu 12.04 64bit updated to 16.4.2012.

I have opened File > New File or Project > Qt Quick Project > Qt Quick Application to create a new project.

Switching in the design mode of qtcreator and dropping a .png on the default canvas causes that crash of qtcreator.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: qtcreator 2.4.1-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
ApportVersion: 2.0.1-0ubuntu3
Architecture: amd64
Date: Mon Apr 16 17:14:37 2012
ExecutablePath: /usr/bin/qmlpuppet
ExecutableTimestamp: 1332371035
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64+mac (20120328)
ProcCmdline: /usr/bin/qmlpuppet

editormode -graphicssystem\ raster
ProcCwd: /home/user
ProcEnviron:
SHELL=/bin/bash
PATH=(custom, no user)
LANG=de_DE.UTF-8
SegvAnalysis:
Segfault happened at: 0x7fae99cdea00 <_ZNK13QGraphicsItem3posEv>: mov 0x8(%rdi),%rax
PC (0x7fae99cdea00) ok
source "0x8(%rdi)" (0x00000018) not located in a known VMA region (needed readable region)!
destination "%rax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: qtcreator
StacktraceTop:
QGraphicsItem::pos() const () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
QmlDesigner::Internal::GraphicsObjectNodeInstance::position (this=<optimized out>) at /build/buildd/qtcreator-2.4.1/share/qtcreator/qml/qmlpuppet/qmlpuppet/instances/graphicsobjectnodeinstance.cpp:131
QmlDesigner::ServerNodeInstance::position (this=<optimized out>) at /build/buildd/qtcreator-2.4.1/share/qtcreator/qml/qmlpuppet/instances/servernodeinstance.cpp:468
QmlDesigner::createInformationVector (instanceList=..., initial=false) at /build/buildd/qtcreator-2.4.1/share/qtcreator/qml/qmlpuppet/instances/nodeinstanceserver.cpp:878
QmlDesigner::NodeInstanceServer::createChildrenChangedCommand (this=<optimized out>, parentInstance=..., instanceList=...) at /build/buildd/qtcreator-2.4.1/share/qtcreator/qml/qmlpuppet/instances/nodeinstanceserver.cpp:956
Title: qmlpuppet crashed with SIGSEGV in QGraphicsItem::pos()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dialout dip lpadmin plugdev sambashare sudo