syntax error in LANGUAGE pragma -- getOptions'.parseLanguage(1) went past eof token

the following program is sufficient to produce this error:

{-# LANGUAGE MultiParamTypeClasses -}

module GZsvn.WDIRops (WDIR (..))
                where

the culprit is the missing # at the end of the prama.

message:

ghc: panic! (the 'impossible' happened)
  (GHC version 6.10.3 for i386-unknown-linux):
	getOptions'.parseLanguage(1) went past eof token

i could not find the same error already reported, but other problems with LANGUAGE pragma syntax.