Hi, this is an error due to formatting in the fnames file - you could open GMLAPI.gml (or GMLive_std.gml in most current versions), find camera_create_view, and replace [, arg1, arg2, ..] by ?arg1, ?arg2 or even just ...args instead of the whole optional batch.
I'll fix this for the next update (while 2.3 update will hopefully be able to use the introduced built-in function references)