Doh! Flash Debug Player.
Could you detail a little, so the next guy comming here can understand what was the problem ?
When using the flash debug player, I was getting the mentioned errors. I don't know what is causing these errors, just that they are only appearing when I use the debug player.
Only the debugger player shows uncaught errors. Release players stop
running code until the next event or frame. The error is showing you a line
number in your code. See that code is on that line.