Solution for EXC_BAD_ACCESS

[fform]

I wrote my own Twilio plugin before I found yours, but this drove me nuts trying to figure it out.

The solution:
Remove the weak_library linker flag to /usr/lib/libSystem.B.dylib

Details on this here:
http://stackoverflow.com/questions/6738858/use-of-blocks-crashes-app-in-iphone-simulator-4-3-xcode-4-2-and-4-0-2

I checked this out with your code and just commented out your sound disabling lines and it works fine