Re-tested this on a clean install of VL5.9 Light and VL5.9 standard and the problem with newt is definitely fixed.
PartImage now works as expected apart from two very minor issues:
-When you install partimage using Gslapt newt is still not picked up as a dependency so this has to be installed seperately.
-When you exit partimage returns to a terminal prompt but when you type at the prompt no text is displayed. If, as an example, I type the letter P nothing is displayed but if I then hit enter I get the following message:
bash: p: command not found
The above happens on both versions of VL.
Otherwise excellent work