Here a list of common errors and their solutions will be kept updated.

This one is easy - it is because some binaries are missing on your system. Just run:

xcode-select --install

Then at the prompt, follow the directions to install developer tools. After installation, run the command:

sudo ln -s /Library/Developer/CommandLineTools/usr/bin/libtool /usr/bin/libtool

That should fix it, try starting up VoiceCode again.