diff --git a/src/GF/Devel/CheckGrammar.hs b/src/GF/Devel/CheckGrammar.hs
index 4ad308366..f0ec8318c 100644
--- a/src/GF/Devel/CheckGrammar.hs
+++ b/src/GF/Devel/CheckGrammar.hs
@@ -311,13 +311,15 @@ checkIfStrType st typ = case typ of
 checkIfLinType :: SourceGrammar -> Type -> Check Type
 checkIfLinType st typ0 = do
   typ <- computeLType st typ0
+{- ---- should check that not fun type
   case typ of
     RecType r -> do
       let (lins,ihs) = partition (isLinLabel .fst) r
       --- checkErr $ checkUnique $ map fst r
       mapM_ checkInh ihs
       mapM_ checkLin lins
-    _ -> prtFail "a linearization type must be a record type instead of" typ
+    _ -> prtFail "a linearization type cannot be" typ
+-}
   return typ
 
  where
@@ -1037,7 +1039,8 @@ linTypeOfType cnc m typ = do
      val  <- lookLin mc
      let vars = mkRecType varLabel $ replicate n typeStr
 	 symb = argIdent n cat i
-     rec <- checkErr $ errIn ("extending" +++ prt vars +++ "with" +++ prt val) $
+     rec <- if n==0 then return val else
+            checkErr $ errIn ("extending" +++ prt vars +++ "with" +++ prt val) $
             plusRecType vars val
      return (symb,rec)
    lookLin (_,c) = checks [ --- rather: update with defLinType ?
diff --git a/src/GF/Devel/GrammarToGFCC.hs b/src/GF/Devel/GrammarToGFCC.hs
index 0d24113dd..520b9a3f5 100644
--- a/src/GF/Devel/GrammarToGFCC.hs
+++ b/src/GF/Devel/GrammarToGFCC.hs
@@ -440,8 +440,8 @@ term2term cgr env@(labels,untyps,typs) tr = case tr of
                Just vs -> (ty,[t | 
                             (t,_) <- sortBy (\x y -> compare (snd x) (snd y)) 
                                             (Map.assocs vs)])
-               _ -> error $ A.prt ty
-             _ -> error $ A.prt tr
+               _ -> error $ "doVar1" +++ A.prt ty
+             _ -> error $ "doVar2" +++ A.prt tr +++ show (cat,lab) ---- debug
        updateSTM ((tyvs, (tr', tr)):) 
        return tr'
      _ -> GM.composOp doVar tr
diff --git a/src/GF/Devel/Optimize.hs b/src/GF/Devel/Optimize.hs
index 4621e8f6c..b44f6a53d 100644
--- a/src/GF/Devel/Optimize.hs
+++ b/src/GF/Devel/Optimize.hs
@@ -247,7 +247,8 @@ mkLinDefault :: SourceGrammar -> Type -> Err Term
 mkLinDefault gr typ = do
   case unComputed typ of
     RecType lts -> mapPairsM mkDefField lts >>= (return . Abs strVar . R . mkAssign)
-    _ -> prtBad "linearization type must be a record type, not" typ
+    _ -> liftM (Abs strVar) $ mkDefField typ
+----    _ -> prtBad "linearization type must be a record type, not" typ
  where
    mkDefField typ = case unComputed typ of
      Table p t  -> do