FOSS gamedev and creative worlds

i am trying to use the helicopter_0.2 mod on minetest 0.4.6(installer). I am using the pilztest game. Hers what the debug says


03:47:51: ERROR[main]: Error loading mod "helicopter_0.2": modname does not follow naming conventions: Only chararacters [a-z0-9_] are allowed.
03:47:51: ERROR[main]: Server: Failed to load and run C:\Minetest\bin\..\games\PilzAdam-PilzTest-24e07d6\mods\helicopter_0.2\init.lua
03:47:51: ERROR[main]: ModError: Failed to load and run C:\Minetest\bin\..\games\PilzAdam-PilzTest-24e07d6\mods\helicopter_0.2\init.lua

Please post this in the topic of the mod.

Also Pilztest is deprecated, use something else.