I have been using Active-HDL (AHDL) for over a year now and I am
pretty happy with it. For one thing, it doesn't have the apparently
unfix-able, tool crashing, memory leak that every version of Modelsim
I have ever used seems to have.

I find that as I go through the edit-compile-simulate cycle I use the
toolbar buttons to 1) Restart the simulation, 2) recompile all modules
3) use a right click menu to clear the waveform display. But this
mostly does not actually recompile the code or does not recompile it
fully or does not use the recompiled code. After a source change I
have to run around this cycle twice to get the new code to actually
simulate.

What am I missing? I find that if I *don't* recompile and try to run
again, I get a dialog telling me the source is out of date and I can
recompile if I want. If I say yes, it recompiles and *always* seems
to do it correctly.

I would say that was a clue, but I am not being Hercule Poirot today
it seems.

Rick