I am sorry for the inconveniece. There is quite a few bugs in currently released version. I am planning to release much more stable version about 10th November (with the focus on stabilisation and much reduced (by orders of magnitude) memory usage).

As to the bug you are experiencing: it is caused by trying to go to your location (space or blue dot button) when the location is not known. In this case some internal variables are set to NaNs (Not a Number value) that was not expected by most of the code. To remove the issue you can either delete /home/user/.cloudgps/config.ini file or edit it and change x=nan and y=nan to x=0 and y=0.

On the bright side take a look at those two screenshots from developement version, can you spot the difference?