[vtkusers] qtimageviewer example crashes with vtk 5.6.0

[Thorben Kröger]

Hello,
Today I tried migrating to vtk 5.6.0.
However, my application using QVTK now crashes. I looked at the distributed Qt 
examples and qtimageviewer exhibits what seems to be the same crash:

GNU gdb (Gentoo 7.1 p1) 7.1
Copyright (C) 2010 Free Software Foundation, Inc.
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This GDB was configured as "x86_64-pc-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.gentoo.org/>...
Reading symbols from 
/home/thorben/tmp/VTK/Examples/GUI/Qt/ImageViewer/qtimageviewer...(no 
debugging symbols found)...done.
(gdb) r
Starting program: 
/home/thorben/tmp/VTK/Examples/GUI/Qt/ImageViewer/qtimageviewer 
warning: no loadable sections found in added symbol-file 
/usr/lib64/debug/lib64/ld-2.11.1.so.debug
[Thread debugging using libthread_db enabled]

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff71e3c8b in QPaintEngine::drawPolygon(QPoint const*, int, 
QPaintEngine::PolygonDrawMode) () from /usr/lib64/qt4/libQtGui.so.4
(gdb) 

The backtrace yields some 2000 call to drawPolygon() ...

What's also intersesting is that the program cannot use the opengl 
graphicssystem:

(gdb) r
Starting program: 
/home/thorben/tmp/VTK/Examples/GUI/Qt/ImageViewer/qtimageviewer -
graphicssystem opengl
warning: no loadable sections found in added symbol-file 
/usr/lib64/debug/lib64/ld-2.11.1.so.debug
[Thread debugging using libthread_db enabled]
using visual class 4, id 9f
QGLFramebufferObject: Framebuffer incomplete attachment.
QGLFramebufferObject: Framebuffer incomplete attachment.
Failed to create pixmap texture buffer of size  QSize(32, 192) , falling back 
to raster paint engine 
QGLFramebufferObject: Framebuffer incomplete attachment.
QGLFramebufferObject: Framebuffer incomplete attachment.
Failed to create pixmap texture buffer of size  QSize(128, 192) , falling back 
to raster paint engine 

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff71e3c8b in QPaintEngine::drawPolygon(QPoint const*, int, 
QPaintEngine::PolygonDrawMode) () from /usr/lib64/qt4/libQtGui.so.4
(gdb) 

Has anyone come across this problem?

Thorben