Error #2078 on Flash IDE publish – Gotcha

I just spent a couple of hours creating an asset in the Flash IDE, and when I went to publish this FLA with absolutely no code except one stop(); in it, I got the following error:

Error: Error #2078: The name property of a Timeline-placed object cannot be modified.
	at flash.display::DisplayObject/set name()
	at flash.display::Sprite/constructChildren()
	at flash.display::Sprite()
	at flash.display::MovieClip()

The culprit? I had named a MovieClip instance within the IDE “name”, which the Flash player doesn’t like at all. It would have been good of the IDE to warn me of this problem (ie, scan the named MovieClips in an FLA and check for reserved words), or give me a more graceful error message, but sadly not. Instead I had to find it the hard way – changing stuff and publishing, changing stuff and publishing, changing stuff and publishing… Hopefully this will save someone a few minutes!