DL3 Blue line

Name:Cormac jackson
Date:18 October 2009
S/W : 1.5.2

Hi,
I am currently touring a small DL3 package.
3 x DL3
1 x d-tec mix pro

I have an issue with a constant vertical thin blue line perhaps one or two pixels wide appearing on the left hand side of every fixture when i use either the internal camera or if i run an other sources into the d-tec and route it back to the projector.
If i run the fixtures in collage the blue line moves to the left hand side also.
I am not getting this line with any of my custom content or stock content so it is limited to the cameras and external source which is an apple mac.

Could this be a d-tec issue or a fixture issue....we have changed mains supply and swapped all fixtures to the same supply but still getting the line.We are running from venue supplies so no generators involved.

thanks Cormac