OK, everyone helped me like a week ago get rsync working, but for some reason, and without me changing anything, it now throws a different error message.
building file list ... pop_dir /data1 : Permission denied
rsync error: errors selecting input/output files, dirs (code 3) at flist.c(1001)
unfortunately both the source and destination have a /data1 in them, so i'm not sure which one its complaining about. I'm starting to not like rsync haha.