Sounds like a javascript error. Do you have any error repors in the console?
Is your
/plugins/responsive-flickr-gallery/colorbox/jquery.colorbox-min.js
accessable?
Make sure to run the latest version of WP and the plugin also.
No follow up from jamesamcgowan. I have to consider the issue is solved.
Whatever it was – must be installation specific cause error cant’ re preproduced on testing, developing and production servers.
Keep me updated with more details if you still have problems.
Sorry Lars , thanks for trying , i also tried awesome , and still had the same issue , but got round it using highside on his plugin instead of colourbox .
it must be an issue with colourbox and as i am just starting to use this dont have the confidence or the abilty to change too many things
but thanks again for trying