Permission Error installint Transmission

Hello.

I just bought a brand new R6250, and installed the latest KONG DD-WRT(DD-WRT v3.0-r28000M kongac (10/24/15))

I just cant install Transmission client.

I tried the following guide: http://www.dd-wrt.com/wiki/index.php/Transmission_daemon

But when installing i get this error running this script: - wget http://www.3iii.dk/linux/optware/optware-install-ddwrt.sh -O /tmp/optware-install.sh

sh /tmp/optware-install.sh

this error:

/tmp/optware-install.sh: line 94: /opt/sbin/ldconfig: Permission denied
/tmp/optware-install.sh: line 95: /opt/bin/ipkg: Permission denied
/tmp/optware-install.sh: line 96: /opt/bin/ipkg: Permission denied
/tmp/optware-install.sh: line 97: /opt/bin/ipkg: Permission denied

Which results in nothing working.

I tried accessing the directory, and the permissions looks correct.

I also tried mounting the driver to fit the script, but still not working.

Can anyone help me getting, thanks alot!