Here's beta.gg My dear MAC testers... I have had some alternative advice from a ruby/js guru... so yet another test... please try it...
Please note that ALL users should upgrade - it tests OK on the PC for me but these changes to the html/rb might affect a very few PC users unexpectedly [like the annoying (but not fatal) js error message that happened with some Win7/Chrome users in earlier versions]...
So MAC users, can you test it on a new SKP and see what the dialog checkboxes defaults to - initially they should all be unchecked except for the 'camera' checkbox which should have a tick...
There must be a cross-platform solution to this weirdness... Thanks for your patience
Feedback please...