Flash Error #1056 Can not create property x on class y
by Travis Johnston on Feb.06, 2009, under Programming
In Flash CS3 this error means that you have instances of symbols on the timeline with instance names on them. But “Automatically declare stage instances” is turned off. Goto File->Publish Setting->Flash->Actionscript 3.0 settings and turn it back on.
Most un-helpful error message you will get:
ReferenceError: Error #1056: Cannot create property background on cg_heist.
at flash.display::Sprite/constructChildren()
at flash.display::Sprite()
at flash.display::MovieClip()
at cg_heist()
You can also get the same exact error if you have
public class cg_heist
{
var background:ScreenWipe;
}
Where background is also the name of an exported symbol script. This often happens when you have artists and programmers working on the same flash files at the same time.
March 13th, 2009 on 1:53 pm
dude, I owe you my sanity, thanks for the tip, I was searching for a background property to MovieClip or something…