Hi All, I just installed xmonad on a new Ubuntu 9.04 system and was hoping it would be quick to setup. I killed metacity and tried to run xmonad from the command line. I get the following error and not sure what it could be due to. I am using ghc 6.10.3 and seem to have all the necessary packages. Would be great if I can get a hint of what is going on. $ xmonad/home/pprakash/.xmonad/xmonad-i386-linux: executeFile: does not exist (No such file or directory) Xlib: extension "XINERAMA" missing on display ":1004.0". xmonad: XMonad/Main.hsc:(69,14)-(71,41): Irrefutable pattern failed for pattern (Data.Maybe.Just nbc_) $ uname -a Linux pprakash-desktop 2.6.28-11-generic #42-Ubuntu SMP Fri Apr 17 01:57:59 UTC 2009 i686 GNU/Linux $ ghc -v Glasgow Haskell Compiler, Version 6.10.3, for Haskell 98, stage 2 booted by GHC version 6.10.1 $ ghc-pkg list /usr/local/lib/ghc-6.10.3/./package.conf: Cabal-1.6.0.3, HUnit-1.2.0.3, QuickCheck-1.2.0.0, X11-1.4.5, array-0.2.0.0, base-3.0.3.1, base-4.1.0.0, bytestring-0.9.1.4, containers-0.2.0.1, directory-1.0.0.3, (dph-base-0.3), (dph-par-0.3), (dph-prim-interface-0.3), (dph-prim-par-0.3), (dph-prim-seq-0.3), (dph-seq-0.3), extensible-exceptions-0.1.1.0, filepath-1.1.0.2, (ghc-6.10.3), ghc-prim-0.1.0.0, haddock-2.4.2, haskell-src-1.0.1.3, haskell98-1.0.1.0, hpc-0.5.0.3, html-1.0.1.2, integer-0.1.0.1, mtl-1.1.0.2, network-2.2.1, old-locale-1.0.0.1, old-time-1.0.0.2, packedstring-0.1.0.1, parallel-1.1.0.1, parsec-2.1.0.1, pretty-1.0.1.0, process-1.0.1.1, random-1.0.0.1, regex-base-0.72.0.2, regex-compat-0.71.0.1, regex-posix-0.72.0.3, rts-1.0, stm-2.1.1.2, syb-0.1.0.1, template-haskell-2.3.0.1, time-1.1.3, unix-2.3.2.0, xhtml-3000.2.0.1 Thanks. Praki