Hi, I need to check if a couple of files have the same number of lines in them. So, I written a little Haskell program that counts the number of lines in a file. import System.Environment (getArgs) main :: IO () main = do [f] <- getArgs cs <- readFile f print $ length (lines cs) Now, when I invoke the program on my computer, it does what it should do: ~ $ ./count count.hs 7 However, when I run the program on a different computer, I get the following: ~ $ scp count count.hs thomas\@...:~ thomas@...'s password: count 100% 492KB 492.2KB/s 00:00 count.hs 100% 125 0.1KB/s 00:00 ~ $ ssh thomas@... [thomas@... ~] $ ./count count.hs count: timer_create: Invalid argument [thomas@... ~]$ What does this error message mean? And why does it occur? Other programs that I written and compiled on my computer worked just fine on the other. I run Arch Linux and I am using GHC 6.10.3, the other computer is a RedHat 3. Cheers, Thomas