Primary problem is that both versions create or desire
a ".nedit" file(same as dir in *nix) in the home
directory. If you could name the new directory for 5.4
".NEdit" , that problem would be resolved.
In addition, the 5.4 rc file is somewhat incompatible
with 5.3 rc but you probably knew that...
Unfortunately, 5.4 is not yet at a daily usable stage
and i need 5.3 to work. I'd like to be able to use
both, ...well, use one and test the other. :)