ash: /opt/piratebox/bin/board-autoconf.sh:: not found

so i was setting up my pirate box and i got to the part where it asked you to

2. Kareha Image and Discussion Board
a) To activate your imageboard, run the following command:
/opt/piratebox/bin/board-autoconf.sh

and i got this
ash: /opt/piratebox/bin/board-autoconf.sh:: not found

please help me