Some little fix error to write cache temp folder when you try render scenes with Yeti and you get error like this:
ERROR Error writing untitled_pgYetiMaya1Shape_4046108918111904799_1.fur the directory doesn't exist! #
To fix that error you need write in your Render Settings in Render Option scroll in line Pre Render MEL this:
pgYetiPreRender;
thats all ;)