i realized that the graphical side of attribute-handling is not compatible with pd version 0.39. This means that flext-based objects will display in a strange way or not be visible at all. I'm about to fix this... at the moment the only way to circumvent these problems is to compile flext with the flag -DFLEXT_NOATTREDIT and also rebuild the externals.
well, it's also possible to recompile flext against 0.39 ;-)
t