I have found out the problem, it's the new Twonky Media Service - the only way to disable this is to install firmware 1.24 in debug mode and wipe everything on the linkstation along with the partition tables.
When you install v1.24 this will revert Twonky server back to v4.*
You could also google custom firmware for the linkstation, there is lots of valuable information if you look hard enough.
I am running firmware v1.31 with old twonky version 4.* and streaming is now running.DTCP is disabled :smileyvery-happy: