Can't install

[RobLewis]

Following the installation instructions: In Growl's Preferences:Displays, there is no Default Style named Prowl (as shown in your guide).

And if I click "Show Disabled", I'm advised "The following plugins have been disabled since they are not fully supported by Growl 2.0":
/Users/xt/Library/Containers/com.Growl.GrowlHelperApp/Data/Library/Application Support/Growl/Plugins/Prowl.growlView

So I'm stuck. I paid $$ for the iOS app. Why can't I use it?

[zac]

If you're using Growl 2.0, you've already got Prowl installed, it's under the action inside Growl.

[RobLewis]

OK, then where do I enter my account information as shown in your instructions?

[zac]

Open the Growl preferences and find Prowl inside. Click the "generate" button and it will prompt you for a username/password.