I\'ve tested the Cordova 3.0.0 CLI Tool. The command
$ sudo cordova platform add android
was done OK. But i\'ve got error during the comman
I had this problem after killing a previous cordova platform add command without letting it finish. It seems that it had partially downloaded the platform files, but terminating it left it in an inconsistent state. As you mentioned, deleting that directory and then re-running the command resolved the problem.
rm -rf ~/.cordova/lib/ios/cordova/3.0.0/
cordova platform add ios
BTW, you shouldn't need to use sudo here. It would be better to run these commands as a normal user.