Hi, I though it was something to do the pre-loader - but it is not.
An EA project is failing to play (or display anything, although inert images will show up when messing with the browser debugger) in Firefox 40.0.3 with Win7 and Win10 (and also have reports of it failing in some Safari configurations, although works fine on an iPad-Safari test device). Refreshing will make it load fine.
Has anyone got any clue as to what I should be looking for?
(I made a very simple test project which works fine from the same server.)