Read from Webpage

I appear to be having some difficulty running this simple script.

local url = http.get("http://dl.dropbox.com/u/7186172/message.txt")
print(url.readAll())
m = peripheral.wrap("right")
m.setTextScale(2)
m.setCursorPos(1, 1)
m.clear()

while true do
m.write(url.readAll())

sleep(5)
m.clear()
end

It prints: