I would not rule out errors since I find at least one every time I add letters.
Actually.......

when did I make so many errors? I don't get it!

Half the sentence is backwards or something. ><
A PLOTS
"--l-o-- /, ---s-a- /, -o- / so / - / -ol- / -o- /. ---- / -o- / s-all / ---ll / a- / -o-- / -l-as--- /, sa-- / o-l- / t-at / -o- / --st / ---- / a---- / a-- / --pa-t / -ot / --o- / -- / -----o- /; -o- / -t / -s / -- / la- / t-at / -o-- / --o / ----s / --- / -a- / --t--- / s-all / --pa-t /."
I hope this makes more sense. I'm terribly sorry.