I've developed a composition in ver 1.5. Yesterday I opened it in ver 3.3 and published.
When I try to open it in the browser (Chrome, IE 11 or IE 9), I get this error:
Uncaught TypeError: Cannot call method 'appendChild' of null
It is reported in edge.3.0.0.min.js line 268 character 253
Can anyone explain / point to a solution.
Best regards
Jørgen