Modify

src/freedombone-prepare-scripts

 cat /tmp/includescripts /usr/local/bin/freedombone-controlpanel > /usr/local/bin/control
 cat /tmp/includescripts /usr/local/bin/freedombone-controlpanel-user > /usr/local/bin/controluser
 
-sed '/# Start including files/,/# End including files/d' /usr/local/bin/control
-sed '/# Start including files/,/# End including files/d' /usr/local/bin/controluser
+sed -i '/# Start including files/,/# End including files/d' /usr/local/bin/control
+sed -i '/# Start including files/,/# End including files/d' /usr/local/bin/controluser
 
 rm /tmp/includescripts