Operating system: win7
Slicer has caught an internal error.
You may be able to continue from this point, but results are undefined.
Suggested action is to save your work and restart.
If you have a repeatable sequence of steps that causes this message, please report the issue following instructions available at http://slicer.org
The message detail is:
Exception thrown in event: Calling methods on uninitialized ctkDICOMItem""