There is a new wiki page called Flex and ActionScript Error Codes that catalogs compiler and run-time errors including the fixes for these bugs. I have been burned more than once by obscure bug errors that I just couldn’t track down in the documentation. Notice that error code 1009 is documented by mister himself. It feels like I discovered a new species of insect in the amazon forest and got to name it :). Kudos to those who created the wiki page, this was a much needed site.