Hi all, ghc-core.hs:263:13: Not in scope: data constructor `C.ExitException' Looks like this comes from the base control.exception ? When I go to the web page for control.exception, there is no exitexception. My reading of the hackage entry for ghc-core makes me think that I've got the correct version of everything. ghc is 6.10.4 Brian Creating dist/build/ghc-core (and its parents) Creating dist/build/ghc-core/ghc-core-tmp (and its parents) /usr/bin/ghc -o dist/build/ghc-core/ghc-core --make -hide-all-packages -i -idist/build/ghc-core/ghc-core-tmp -i. -idist/build/autogen -Idist/build/autogen -Idist/build/ghc-core/ghc-core-tmp -optP-include -optPdist/build/autogen/cabal_macros.h -odir dist/build/ghc-core/ghc-core-tmp -hidir dist/build/ghc-core/ghc-core-tmp -stubdir dist/build/ghc-core/ghc-core-tmp -package base-4.1.0.0 -package colorize-haskell-1.0.0 -package directory-1.0.0.3 -package filepath-1.1.0.2 -package pcre-light-0.3.1 -package process-1.0.1.1 -O -Wall -XPatternGuards ./ghc-core.hs