Ah, so you work with
Eve, Pedro?
Using AOLserver 4.0.x or 4.5.x will probably work for ACS 3.4.9, but
you might have to tweak a few things. AFAIK, all the ad13 features
that you should need to run ACS were eventually forward-ported to
AOLserver 4.0.x. I don't know whether they kept the exact same API or
not in all cases though, particularly for the character set stuff.
I don't think 4.0.x includes the ad13
Tcl bytecode cache,
which might be a performance issue if your site is very busy. Then
again, some very large sites (like Gustaf's) are running on OpenACS +
AOLserver 4.x, and they don't seem to have missed it.