Here is the debug version, re-created from scratch, using the same values/textures (with mods disabled i think).
http://sp.zhabite.com/sharedfiles/filedetails/?id=662457704

Sadly, no ...
I made a debug version, but it seems there is the same problem.

i have the same issue as frederiklenius. any ideas?

So cool, but i could only load the map once with this theme. After that whenever i tried to load it it says "Warning: The custom map theme used by this map or save is missing. A default map theme will be used instead. Do you wish to proceed?", do you have an idea of whats wrong?

I had a Canyon themed map with some canyon rivers for DAM construction in mind for a long time now but couldn't find a theme like this myself. If you want to i can post screenshots of the map along with my city later.

Thanks Zefnoy !

I created it because I couldn't find one.

Thanks! Just what i was looking for with my Canyon stylish map!