>Just as a warning. This is how the last Mac version of gnuplot 4.0 fails here.
>dyld: Library not loaded: /usr/local/lib/libaquaterm.1.0.0.dylib
this is an installer bug in AquaTerm 1.0.1
Unless you are on an Intel Mac, simply use the AquaTerm 1.0.0 installer to downgrade (only difference is that 1.0.1 is a "fat" binary containing both Intel and PPC code).
If you have an Intel Mac, just create a symlink:
ln -s /Library/Frameworks/AquaTerm.framework/Versions/A/AquaTerm /usr/local/lib/libaquaterm.1.0.0.dylib
/Per (back on-line real soon now)