New to Haskell AND FranTK I am trying to install both. So far I have: 1. installed Hugs98 (seems to work) 2. installed TCL/TK (demos work fine) 3. installed FranTK that is were I am stuck. Since I am running Windows, I have modified tclhugs98.bat to point to the right directories. When I start tclhugs98 ..\demos\demos.lhs Hugs is really starting to load the files, but when it reaches frantk/src/TclHaskellSrc/Utils.hs it halts with the following message: ERROR "F:\Haskell\frantk\src\TclHaskellSrc\Utils.hs":61 - Definition of variable "updateIORef" clashes with import Variable updateIORef is indeed mentioned in the file BaseTypes.hs, and IORef.hs, which are loaded earlier on. I tried commenting updateIORef out of IORef.hs. That helps to load another dozen files or so. But then it hangs again, this time with the message: ERROR "F:\Haskell\frantk\src\FranSrc\MutSet.hs":40 - Cannot use type synonym in instance head Now I am really stuck. Has anybody managed to run the FranTK demo? Why is trying to start Hugs in Hugs-mode rather then Haskell98? I am grateful for any help . Cheers, Stephan