geotiff inserted at the base cartographic de mission planner?

I followed the report
http://www.diydrones.com/profiles/blogs/using-your-own-map-data-in-mission-planner
but I do not load the geotiff I have previously created with Global Mapper, and uploaded to geoserver.
It fails me but does not show me the geotiff generated.
I'm using the 1.2.80 version of the mission planner
What's the problem?
In that projection must generate geotiff?
thank you very much, greetings

Reproduce the failure using Mission Planner 1.2.80, the linked DIY Drones report, the GeoTIFF created with Global Mapper, and the upload to GeoServer. Check which projection and GeoTIFF setup were used. Done means identifying the cause and documenting the required configuration or a confirmed fix for displaying the map data.

Written by the indexing model from the issue text.