Update: quite amazingly, compiling to html5 instead of flash shows the swf just fine (well, kinda. the text is missing and my freehand spiral has its start joined to its end for some reason. and…the scaling looks the same as if I had exported each frame to PNG and then scaled it. so i didn’t really gain from using vectors in this case. but no runtime errors in the console, at least in firefox.) Bug?
Although, compiling to native windows also has a run-time error:
Error
Null Object Reference
OK