I am using Caltool 3.6.373 but cannot get the surface view function to work.  I can view tables in Matrix view, but when selecting Surface view the display is just blank with the single cell value shown in the top corner.

Any advise on how to correct this issue would be greatly appreciated.  

caltool issue.JPG 
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Looks like all your colour options are set to black..   Right click on the area and select properties, you can then select desired colours.  I would suggest to update to latest version also, that one is a bit old.   
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