Ok, when I start pd-extended from inside the folder ~/pure-data/doc/pddp, then I do this:
1. Open up the "Related_objects" subpatch
2. right-click on [tabread4~] and choose "Help"
I get this in my cli console:
open: tabread~-help.pd/tabread~-help.pd: Not a directory
tabread~-help.pd: Not a directory
This only seems to happen if the help patch is in the directory where I started Pd. If I create [cup] and right-click its help everything works.
Not sure if this is specific to pddplink or a more general issue.