I'm using some Multi-parameter Type Classes with the November 1999 version of Hugs98 on Windows command-line version and getting the following internal type error: WinHugs simply chokes and dies. At one point, the hugs command-line version was accepting the code if I commented out the function definitions but left the constant data definition, but after restarting hugs, it seems to always get a internal type-check error. __ __ __ __ ____ ___ _________________________________________ || || || || || || ||__ Hugs 98: Based on the Haskell 98 standard ||___|| ||__|| ||__|| __|| Copyright (c) 1994-1999 ||---|| ___|| World Wide Web: http://haskell.org/hugs || || Report bugs to: hugs-bugs@haskell.org || || Version: November 1999 _________________________________________ Hugs mode: Restart with command line option +98 for Haskell 98 mode Reading file "C:\LANG\HUGS98\lib\Prelude.hs": Hugs session for: C:\LANG\HUGS98\lib\Prelude.hs Type :? for help Prelude> :l scripts/error.hs Reading file "scripts/error.hs": Type checking INTERNAL ERROR: findBtyvsInt Prelude> best, leon