nil can't be coerced into Fixnum
C:/Users/flatfoot/AppData/Local/Temp/ocr7352.tmp/src/start_up.rb:468:in `-'
C:/Users/flatfoot/AppData/Local/Temp/ocr7352.tmp/src/start_up.rb:468:in `control_nob'
C:/Users/flatfoot/AppData/Local/Temp/ocr7352.tmp/src/booty.rb:393:in `operate'
C:/Users/flatfoot/AppData/Local/Temp/ocr7352.tmp/src/scenes.rb:62:in `main_quest'
C:/Users/flatfoot/AppData/Local/Temp/ocr7352.tmp/src/IMPERIALIZER.rb:151:in `block in <main>'
C:/Users/flatfoot/AppData/Local/Temp/ocr7352.tmp/src/IMPERIALIZER.rb:60:in `loop'
C:/Users/flatfoot/AppData/Local/Temp/ocr7352.tmp/src/IMPERIALIZER.rb:60:in `<main>'