After much progress and learning, I'm stuck again trying to get happs to compile under ghc 6.7. (Hoping that running happs under the new ghc debugger will help me understand it better.) I was trying to compile from the "stable" 8.8 version, unzipped and with just a few modifications. (see attached zip). The problem has to do with an "unbound implicit parameter" [53 of 72] Compiling HAppS.Protocols.MessageWrap.W ( src/HAppS/Protocols/MessageWrap/W.hs, dist/build/HAppS/Protocols/MessageWrap/W.o ) src/HAppS/Protocols/MessageWrap/W.hs:209:63: Unbound implicit parameter (?style::Element -> XML Element) arising from a use of `xmlWrapM' at src/HAppS/Protocols/MessageWrap/W.hs:209:63-72 In the expression: xmlWrapM v In the definition of `ehShow'': ehShow' (DynException e) | Just (DynErr' v) <- fromDynamic e = xmlWrapM v I'd appreciate any advice. thomas. --- This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden.