Thanks for coming back to me so quickly.
I've deleted the Dreamweaver Cache as instructed and still cannot see the behviours in the panel..
Have created a new table with name and column names to 'camel casing' as you suggest, and sadly no, the behaviours do not run correctly even after making this change. I get this message:
Unknown column 'titleMemPic title_memPic' in 'field list' on this page:
Looks like there was a tricky little space in the column title.....(blush)
Sorry to have bothered you....