Thats weird juandel, i dont have these messages : the script runs to the end, but it does what he feels like (certainly not what i was doing). I guess its just a wild script 
For the info, i did not resize or zoom the canvas, and i used only default textures and material.
By the way, i have to tell you that i tried my luck at landscaping with zb after seeing all the ones you made in the alphacentury thread (1 week ago). You made me understood how powerful zb could be for these things.
Here is what the jupiter’s moon looks like during daylight. Its pretty cold upthere, so everything is kinda recovered by snow.

why dont you post your precious vistas and tips into the alphacentury thread as well (hinthint ;)), they would turboboost the whole gallery to new limits and future newbies might find their inspirations more easily.
Did you by chance use the eraser to creat the tunnel under that overhang?