Hello, here is something maybe useful for you :
i couldn't start twonkyserver after a fresh install :
Starting server ...
Starting /usr/local/bin/twonkymedia/twonkymedia ... /usr/local/bin/twonkymedia/twonkymedia.sh: 154: /usr/local/bin/twonkymedia/twonkymedia: not found
here is the solution :
i am running a ubuntu 64 bits. Twonky needed 32 bit support. Or something.
Anyway, this fixed it:
sudo apt-get install ia32-libs
source : http://ubuntuforums.org/archive/index.php/t-114187.html
enjoy