[Chicken-users] callbacks returning twice

[Jörg F. Wittenberger]

Hi all,

for a couple of days I've been looking into iup for chicken.  This is
close to the best thing since sliced bread in a way.

Except that it crashes all the time.  "callback returned twice"

So what's the recipe to hit that problem?

(The code is fairly trivial; I'm just exploring.  Actually I was about
to ask "what I'm doing there in the first module is so basic textbook
stuff, which egg do I actually want to use instead of mimicking it
here?" - It registers some callbacks around data to propagate updates to
the gui elements.)

Thanks for any suggestions.

/Jörg

(I attach my code here for reference.  Just in case.  It really does not
too much; the second and third tab are only useful in connection with a
server, just the first one usable out of the box.  Not much different to
csi, just with a gui.)

iuprep.scm
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