[computer-go] "visual tree" (gogui extension) help request

[Peter Christopher]

Hi, By any chance does anyone have a tip to help me get VisualTree working?

http://www.cs.unimaas.nl/g.chaslot/vt/vt09/docs/install.html says I should run

" java -jar vtbeta.jar"

but this produces the error:

Exception in thread "main" java.lang.NoClassDefFoundError:
net/sf/gogui/utils/ErrorMessage



The original page also states to store the jar in a certain lib
directory I cannot find on my linux ubuntu system.  Gogui does work
fine.  I use it regularly (great tool).

Thanks in advance.
Peter