Hallo!
Im sorry for not being able to give any more info on these errors but they seem totally random. The only thing i can add about this second bug is that wish84's CPU use shoots up when this behaviour starts.
I think this can be a PD-GUI problem. Maybe you are writing in an array very often or do something else, where the GUI needs a lot of cpu (use speedlim to avoid such problems ...) Then a lot of strange things can happen which drive you crazy if you try to debug them ...
LG Georg