Looks like error with correct usage of aircrack-ng tools (user-error, to be precise), which is totally out of Cleven's scope. From your description, Cleven already did what it had to do, and your question is related to correct usage of aircrack suite.

I recommend reading one of zillions airack tutorials on net. If you still think it's a bug, raise it with mainstream aircrack (or it's maemo port maintainer, if it would be fixed upstream). Just be sure to check if you're using correct drivers with injection.

/Estel