Hello, I ran into this error while trying to install statistics. Does this indicate that I need to upgrade my GHC before I can install? kss@CATSKILL:~/projects/> cabal update Downloading the latest package list from hackage.haskell.org kss@CATSKILL:~/projects/> cabal install statistics Resolving dependencies... Downloading erf-1.0.0.0... Configuring erf-1.0.0.0... Preprocessing library erf-1.0.0.0... Building erf-1.0.0.0... [1 of 1] Compiling Data.Number.Erf ( src/Data/Number/Erf.hs, dist/build/Data/Number/Erf.o ) ar: creating archive dist/build/libHSerf-1.0.0.0.a Installing library in /Users/kss/.cabal/lib/erf-1.0.0.0/ghc-6.10.1 Registering erf-1.0.0.0... Reading package info from "dist/installed-pkg-config" ... done. Writing new package config file... done. Downloading primitive-0.2.1... Configuring primitive-0.2.1... Preprocessing library primitive-0.2.1... Building primitive-0.2.1... [1 of 7] Compiling Data.Primitive.MachDeps ( Data/Primitive/MachDeps.hs, dist/build/Data/Primitive/MachDeps.o ) [2 of 7] Compiling Control.Monad.Primitive ( Control/Monad/Primitive.hs, dist/build/Control/Monad/Primitive.o ) [3 of 7] Compiling Data.Primitive.Types ( Data/Primitive/Types.hs, dist/build/Data/Primitive/Types.o ) [4 of 7] Compiling Data.Primitive.Array ( Data/Primitive/Array.hs, dist/build/Data/Primitive/Array.o ) [5 of 7] Compiling Data.Primitive.ByteArray ( Data/Primitive/ByteArray.hs, dist/build/Data/Primitive/ByteArray.o ) Data/Primitive/ByteArray.hs:57:27: Not in scope: `newAlignedPinnedByteArray#' cabal: Error: some packages failed to install: mwc-random-0.5.0.0 depends on primitive-0.2.1 which failed to install. primitive-0.2.1 failed during the building phase. The exception was: exit: ExitFailure 1 statistics-0.5.1.0 depends on primitive-0.2.1 which failed to install. vector-0.5 depends on primitive-0.2.1 which failed to install. vector-algorithms-0.3.1 depends on primitive-0.2.1 which failed to install. Thanks, Keith -- keithsheppard.name