Just an addition to this, there's some more weird behavior. When I have my patch open, with no bangs sent to [link] or [mass], if I open the 01_basic.pd patch from pmpd's examples, I get "error: inlet: expected 'float' but got 'bang'", whereas if I open 01_basics.pd without having my patch open, everything seems to work fine. I'm not using [send] from [metro] to [link] and [mass], but I rather connect them with cords.
I'm just sending this one as well in case it's a hint that will help someone who might know what's wrong.