I just tried

	SoundCodecPlugin translate

in 2.9a and got a walkback. An attempt was made to create a directory in the Squeak directory called 'SoundCodecPrims', but that's also the name of the plugin file and the Mac does not allow a file and a directory by the same name in the same directory. Is this one of those platform-specific issues? Or something else?

Cheers,
Bob