Tube filter needs a "vectors: none" option
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
If a file contains lines where the end points of the lines have normals, but the normals are not appropriate for defining the orientation of a tube, the filter crashes. If you could select "Vectors: none", the filter would work fine (the equivalent thing to do that is possible now is to uncheck "normals" in Properties -> Cell/Point Array Status).