Trying to change the domain on a part_source object. It accepts various shapes (as symbols - cube, cone, sphere, etc). I've been working on this project for a week, and it has worked fine that whole time, but now it rejects a symbol in a message box, saying

Expected 'symbol' but got 'sphere'

As far as I am aware, [sphere( is a symbol. I've not had an issue other than the last half hour. Does anybody know why this is happening? Thanks.

perhaps you should view the help file what_is_a_symbol.pd. it's in Manuals/MessageOddness. turns out that sphere is not a symbol, you need to use [symbol $1( in a message box or put it through a symbol object in order to add the symbol selector. also see 2.3.1. anatomy of a message in the pure data manual (in the "doc" folder) though it's not quite as clear as it could be