Helmut,

your ranting and raving about 4Nec2 seem entirely unfair, the 'bugs'
that you complain do not seem to be bugs at all, just the way the
program works; which is not to your liking.

Placing sources requires that you click whilst away from the wire and
then drag the source onto the wire. This is not a bug, just the way that
the author chose to do it.

In many years of using 4Nec2 I have never had it loose a file, so I can
only assume that there is some sort of problem at your end.

Yes, it would be nice to have a 'New' button, but again not a bug, just
the way that the program works. If this minor inconvenience pains you
that much ask the author to add one.

Regarding optimization the phrase 'garbage in garbage out' springs to
mind. Optimizers are just that, optimizers, they WILL NOT take a rubbish
design and turn it into the perfect antenna.

Optimizers rely on finding minima (or maxima) in the set of parameters
that you supply, so unless you are close to a good design it is very
likely that they will 'get stuck' in a local minima and then home in on
something other than an optimum design. So you have to have a good
design to start with and also not try to optimize to a set of
unrealistic goals. This applies TO ALL optimizers not just 4Nec2.

Regards
Jeff