Dude, have you been following this thread? He clearly mentioned in the previous posts that until he feels that the app has matured well enough to be quite stable for most people, he'll push it to extras-devel. Where have you been lately? He will only be hosting his updates on his site until he feels its stable enough. Hence, the app is still for testing and he is gradually fixing bugs.

He also mentioned that he is at his university this week and will only release an update when he gets access to the net. Possibly friday. Didnt you see?

Anyways considering you need to be spoon-fed everything and dont take the effort to learn like we do, I guess this app is not yet ready for your use and you should wait for a stable release.

And please take your time in reading this thread over. I'm sure you'll find your answers.

Cheers!

EDIT: and i guess the version you've installed from extras-devel should be version 0.2.2 as autobuilder wasnt working properly when he released 0.3.0 and hence it explains why the app is not opening from the menu shortcut. v0.2.2 didnt have a GUI implemented yet. Please read and understand a thread before downloading or installing any software on your phone next time. It'll definitely solve most of your issues.