an actionscript error has occurred

an actionscript error has occurred

To get rid of it:

1. Go to C:\Documents and Settings\[your_login_name]
2. Open/create the file mm.cfg.
3. Add the following to the file:
   SuppressDebuggerExceptionDialogs=1
4. Maybe you need to restart the browser

Source:

Turn off Flash player debug messages

http://devharbor.blogspot.de/2009/07/turn-off-flash-player-debug-messa ges.html