Done all suggested above. But no joy. I've tried both on my iPad and on my Mac Pro Desktop. Could be a Safari problem. will check using Chrome and Firefox.
updated by @isleander: 12/29/14 09:23:54AM
Michael, thanks for checking this.
I unchecked both boxes in the User Daily Limits but still cannot play the video. The same error message appears. I also (later) set the limits to Max for both Video and Audio. But this makes not difference.
Also makes no difference if I am logged in or not. So I am rather stumped with this.
I'm getting this error [-see image] when trying to update some discussions.
It appears that all discussions have now been associated with Groups. However, not all older Discussions were linked with a group.