VTK console errrors when running tests (windows 7, 64bit, vtk 6.2)

Running the mayavi tests on windows with python 2.7.9 and vtk 6.2 (http://www.lfd.uci.edu/~gohlke/pythonlibs/#vtk):

```
coverage run -p -m nose.core -v mayavi
```

Throws these errors

```
ERROR: In ..\..\..\VTK-6.2.0\Interaction\Widgets\vtkSphereWidget.cxx, line 138
vtkSphereWidget (0000000016230000): The interactor must be set prior to enabling/disabling widget

RROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkStreamingDemandDrivenPipeline.cxx, line 857
vtkStreamingDemandDrivenPipeline (000000000F6421D0): The update extent specified in the information for output port 0 on algorithm vtkTrivialProducer(000000000F5D8050) is 0 2147483647 0 2147483647 0 2147483647, which is outside the whole extent 0 50 0 50 0 50.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkTrivialProducer.cxx, line 279
vtkTrivialProducer (000000000F5D8050): This data object does not contain the requested extent.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkStreamingDemandDrivenPipeline.cxx, line 857
vtkStreamingDemandDrivenPipeline (000000000F6421D0): The update extent specified in the information for output port 0 on algorithm vtkTrivialProducer(000000000F5D8050) is 0 2147483647 0 2147483647 0 2147483647, which is outside the whole extent 0 50 0 50 0 50.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkTrivialProducer.cxx, line 279
vtkTrivialProducer (000000000F5D8050): This data object does not contain the requested extent.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkStreamingDemandDrivenPipeline.cxx, line 857
vtkStreamingDemandDrivenPipeline (000000000F6421D0): The update extent specified in the information for output port 0 on algorithm vtkTrivialProducer(000000000F5D8050) is 0 10000 0 10000 0 10000, which is outside the whole extent 0 50 0 50 0 50.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkTrivialProducer.cxx, line 279
vtkTrivialProducer (000000000F5D8050): This data object does not contain the requested extent.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkStreamingDemandDrivenPipeline.cxx, line 857
vtkStreamingDemandDrivenPipeline (000000000F6421D0): The update extent specified in the information for output port 0 on algorithm vtkTrivialProducer(000000000F5D8050) is 0 10000 0 10000 0 10000, which is outside the whole extent 0 50 0 50 0 50.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkTrivialProducer.cxx, line 279
vtkTrivialProducer (000000000F5D8050): This data object does not contain the requested extent.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkStreamingDemandDrivenPipeline.cxx, line 857
vtkStreamingDemandDrivenPipeline (000000000F6421D0): The update extent specified in the information for output port 0 on algorithm vtkTrivialProducer(000000000F5D8050) is 0 10000 0 10000 0 10000, which is outside the whole extent 0 50 0 50 0 50.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkTrivialProducer.cxx, line 279
vtkTrivialProducer (000000000F5D8050): This data object does not contain the requested extent.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkStreamingDemandDrivenPipeline.cxx, line 857
vtkStreamingDemandDrivenPipeline (000000000F6421D0): The update extent specified in the information for output port 0 on algorithm vtkTrivialProducer(000000000F5D8050) is 0 10000 0 10000 0 10000, which is outside the whole extent 0 50 0 50 0 50.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkTrivialProducer.cxx, line 279
vtkTrivialProducer (000000000F5D8050): This data object does not contain the requested extent.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkStreamingDemandDrivenPipeline.cxx, line 857
vtkStreamingDemandDrivenPipeline (000000000F64D840): The update extent specified in the information for output port 0 on algorithm vtkTrivialProducer(000000000F5DB230) is 0 2147483647 0 2147483647 0 2147483647, which is outside the whole extent 0 50 0 50 0 50.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkTrivialProducer.cxx, line 279
vtkTrivialProducer (000000000F5DB230): This data object does not contain the requested extent.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkStreamingDemandDrivenPipeline.cxx, line 857
vtkStreamingDemandDrivenPipeline (000000000F64D840): The update extent specified in the information for output port 0 on algorithm vtkTrivialProducer(000000000F5DB230) is 0 2147483647 0 2147483647 0 2147483647, which is outside the whole extent 0 50 0 50 0 50.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkTrivialProducer.cxx, line 279
vtkTrivialProducer (000000000F5DB230): This data object does not contain the requested extent.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkStreamingDemandDrivenPipeline.cxx, line 857
vtkStreamingDemandDrivenPipeline (000000000F64D840): The update extent specified in the information for output port 0 on algorithm vtkTrivialProducer(000000000F5DB230) is 0 10000 0 10000 0 10000, which is outside the whole extent 0 50 0 50 0 50.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkTrivialProducer.cxx, line 279
vtkTrivialProducer (000000000F5DB230): This data object does not contain the requested extent.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkStreamingDemandDrivenPipeline.cxx, line 857
vtkStreamingDemandDrivenPipeline (000000000F64D840): The update extent specified in the information for output port 0 on algorithm vtkTrivialProducer(000000000F5DB230) is 0 10000 0 10000 0 10000, which is outside the whole extent 0 50 0 50 0 50.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkTrivialProducer.cxx, line 279
vtkTrivialProducer (000000000F5DB230): This data object does not contain the requested extent.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkStreamingDemandDrivenPipeline.cxx, line 857
vtkStreamingDemandDrivenPipeline (000000000F64D840): The update extent specified in the information for output port 0 on algorithm vtkTrivialProducer(000000000F5DB230) is 0 10000 0 10000 0 10000, which is outside the whole extent 0 50 0 50 0 50.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkTrivialProducer.cxx, line 279
vtkTrivialProducer (000000000F5DB230): This data object does not contain the requested extent.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkStreamingDemandDrivenPipeline.cxx, line 857
vtkStreamingDemandDrivenPipeline (000000000F64D840): The update extent specified in the information for output port 0 on algorithm vtkTrivialProducer(000000000F5DB230) is 0 10000 0 10000 0 10000, which is outside the whole extent 0 50 0 50 0 50.

ERROR: In ..\..\..\VTK-6.2.0\Common\ExecutionModel\vtkTrivialProducer.cxx, line 279
vtkTrivialProducer (000000000F5DB230): This data object does not contain the requested extent.
```