To all, I updated the game last evening, and now, it shouldn't crash anymore when you click on "ok". People who downloaded the Build 40 before that still crash.
Now, I also corrected the Slice Serve. It was happening only for Rights-Hander, and I usually test with a Leftie... So it'll be fixed next time I update the game, hopefully within a few hours (still looking into the "chat freezing game" bug...

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S.Williamz, turn on the "Advanced Options" in the "Misc Options" menu, and then in the "Controls" u change change the keys for the Quick Chat.
Mr.Schmith, i cannot find your post with suggestions, but I usually do the most easy additions and/or the one I judge the most significant to improve the gameplay. So I very often discard all cosmetic additions that sound easy to ask, but need tons of work for a very low perceived improvement. There are also good suggestion that I don't do coz they take too much time and I must prioritize other ones...
tati cornet, try this alternate link : .com/download.php?TE2009_fe1d.exe
viktor1212, player speed hasn't been changed ; the topspin has been lowered on the run, so it should be a bit harder to defend, but not much.