If you do not see anything in the view window, you should make sure that the x y and z planes have been checked in the showtextureslice UI.  If there are no errors then that is the most likely issue.  It helps to see leave the color map unaltered at first (do not make zero transparent).  If you see the slice widget (looks like a small sphere) but nothing else, you may have moved it off the volume.  create a new shotextureslices module (and select the planes).  If that doesn't work or you see slices that are gray or all blue, then the data could be corrupted.  Make sure you are loading the correct file (torso_segmentation_si.fld) from the SCIRunData file.  You may need to download the data again.  

This should work.  The only thing that you have to change in the modules is checking the planes as mentioned.  Don't change any other settings in the module (at first).  There is an off chance that there are some graphics card compatibility issues since the texture data is meant to use the shader functionality in the hardware, however I haven't seen major problems with this module, especially if you haven't had any other graphics issues with SCIRun.  

cheers,

Jess