asterisk users - May 2008 - ILBC sh script throwing error

Hi
I need to use ilbc so I did sh get_ilbc_source.sh it downloads the
file and it then says


awk: extract-cfile.awk:1: BEGIN { srcname = "nothing"; }
' in expressionile.awk:1: ^ invalid char '
***
The iLBC source code download is complete.
***


I did also download the extract-cfile.awk directly from
http://www.ilbcfreeware.org/software.html [^] and then I applied
awk -f extract-cfile.awk rfc3951.txt

as mentioned in the script but that did throw the same error. I dont
know if this is awk/asterisk or iLBC related but I could not find
anything using google.

Thanks.