I couldn't find if anyone else is having the same problem, but I need to use [zl group] but this is coming up as a missing object. I am guessing that any of the other objects associated with zl will also be missing.
I am using PD 0.51.4
Sorry this has been posted before but I couldn't find it. All my plants seem correct in PD, I just don't seem to have these objects for some reason