a new feature of minetest 0.4.10 is, that it supports capes for the player skins.
if you see this message it means there are some ugly pixels on the space where the skin should be.
(like that ones on the image here)
I'm the author of the skin
if you are the author of that skin i recommend you to remove that pixels from the skin file and upload it again. use the report button to send me a message with the new skin file, so i can replace the old one.
Sam II and my player capes model just got intergrated into minetest_game!
How do I make a cape?
The above red section shows where the cape must be placed (it is double sided and the sides mirror the edges), while the result of a good cape; shown here;
Video demonstartion of capes here:
https://www.youtube.com/watch?v=TBCBxHDcHvw
Sam II is also included with this major pull.