VerifyError: Error #1033 Cpool entry 29 is wrong type.

Don’t panic! It’s easy to solve. You’re running your SWF in a Flash Player version lower than the one you compiled it in. For me I compiled it as a FP10 SWF but my version of Eclipse ran by default in FP9 and that’s the error it spat out. If you are using Eclipse/FDT/Flash Builder then :

  • Window -> Preferences
  • FDT -> Tools -> Flash
  • Change the Flash Player path to point to Flash Player 10.

That’s it. Problem solved.