slice3dVWR crashes reproducibly in DeVIDE 12.2.7 on SLED 11

[GoogleCodeExporter]

1. Load up panoramix dataset with DICOMReader
2. connect with sliced3VWR
3. slice to and fro through data
4. see DeVIDE crash without error message!

(reported by Korijn van Golen)

Original issue reported on code.google.com by cpbotha on 21 Feb 2012 at 11:35