[Bf-committers] Can't copy Greasepencil datablock

[Thomas Volkmann]

Hi,
 
I try to create a copy af a Greasepencil datablock, but without success. In the
API it says that GreasePencil is inheriting ID.copy(), but that doesn't work for
me.
http://www.blender.org/api/blender_python_api_2_73a_release/bpy.types.GreasePencil.html
 
Also at ID.copy() it says:  Create a copy of this datablock (not supported for
all datablocks)  ...is that the case? How can I see wich datablocks are not
supported?
 
Thanks,
Thomas