No map click position available

Hello,

Every time I try to click “Fly to” and set the altitude, I get a “No map click position available” error and the copter doesn’t move.

I also get the error of "Error in command [‘sethome’’]: ‘NoneType’ object has no attribute ‘getitem’ when I do “Set Home”.

I tried doing "guided ", the the copter doesn’t do anything.

I suspect there’s something wrong with my installation but I can’t figure out what. I’m using Ubuntu 14.04.4 LTS, Python 2.7.6, and python-wxgtk2.8.

Thank you.