Actual Twonky Server - Install Debian Wheezy failed

Hello,

I install twonky server at an arm with debian wheezy with the install instructions. Also I take a look in the internet and the most say the same. But when I will start twonky I get the error message:

root@arm:/usr/local/twonky# /usr/local/twonky/twonky.sh start
Starting /usr/local/twonky/twonkystarter ... /usr/local/twonky/twonky.sh: 176: /usr/local/twonky/twonky.sh: /usr/local/twonky/twonkystarter: not found

The files are there and some days ago before I reinstall my arm twonky was running fine.

Is there somebody who can give me the correct instructions to isntall it step by step?

Thanks a lot, Ralf