diff --git a/docgenerator.lua b/docgenerator.lua
index efa10ee..2bd323f 100644
--- a/docgenerator.lua
+++ b/docgenerator.lua
@@ -33,6 +33,7 @@ function M.generatedocforfiles(filenames, cssname,noheuristic)
   local wrongfiles = {}
   for _, filename in pairs( filenames ) do
     -- Load file content
+    print(filename)
     local file, error = io.open(filename, 'r')
     if not file then return nil, 'Unable to read "'..filename..'"\n'..err end
     local code = file:read('*all')
diff --git a/models/apimodel.lua b/models/apimodel.lua
index f661c85..2a367ad 100644
--- a/models/apimodel.lua
+++ b/models/apimodel.lua
@@ -188,7 +188,7 @@ function M._item(name)
           if not file then
             if self.parent and self.parent.tag == 'recordtypedef' then
               file = self.parent.parent
-            elseif self.parent.tag == 'file' then
+            elseif self.parent and self.parent.tag == 'file' then
               file = self.parent
             end
           end
diff --git a/template/index/recordtypedef.lua b/template/index/recordtypedef.lua
index 33796bd..79159ee 100644
--- a/template/index/recordtypedef.lua
+++ b/template/index/recordtypedef.lua
@@ -58,11 +58,13 @@ return [[#
 #         local file = modules[modulename]
 #         if file then
 #           local itypedef = file.types[typedef.supertype.typename]
-#           itypedef.originalname = itypedef.name
-#           itypedef.name = name
-#           inherittype( itypedef, name, itypedef.originalname )
-#           itypedef.name = itypedef.originalname
-#           itypedef.inheritedname = nil
+#           if itypedef then
+#              itypedef.originalname = itypedef.name
+#              itypedef.name = name
+#              inherittype( itypedef, name, itypedef.originalname )
+#              itypedef.name = itypedef.originalname
+#              itypedef.inheritedname = nil
+#           end
 #         end
 #       end
 #     end
diff --git a/template/recordtypedef.lua b/template/recordtypedef.lua
index cdef337..29c0067 100644
--- a/template/recordtypedef.lua
+++ b/template/recordtypedef.lua
@@ -79,17 +79,19 @@ return [[#
 #  end 
 #  if typedef.supertype then
 #    local modulename = typedef.supertype.modulename
-#    if modulename then 
+#    if modulename and modules then 
 #      local file = modules[modulename]
 #      if file then
 #        local supertypedef = file.types[typedef.supertype.typename]
-#        supertypedef.originalname = supertypedef.name
-#        supertypedef.name = name
-#        supertypedef.originallink = fulllinkto( typedef.supertype )
-#        inherittype( supertypedef, name, supertypedef.originallink )
-#        supertypedef.name = supertypedef.originalname
-#        supertypedef.originalname = nil
-#        supertypedef.originallink = nil
+#        if supertypedef then
+#          supertypedef.originalname = supertypedef.name
+#          supertypedef.name = name
+#          supertypedef.originallink = fulllinkto( typedef.supertype )
+#          inherittype( supertypedef, name, supertypedef.originallink )
+#          supertypedef.name = supertypedef.originalname
+#          supertypedef.originalname = nil
+#          supertypedef.originallink = nil
+#        end
 #      end
 #    end
 #  end
diff --git a/templateengine.lua b/templateengine.lua
index 0f1bd00..c794815 100644
--- a/templateengine.lua
+++ b/templateengine.lua
@@ -34,7 +34,7 @@ function M.applytemplate(elem, ident, templatetype,...)
 
   -- apply template
   local str, err = pltemplate.substitute(template, env)
-
+  --print(string.format("Template = %s",template))
   --manage errors
   if not str then
     local templateerror = templatetype and string.format(' parsing "%s" template ', templatetype) or ''
@@ -48,6 +48,7 @@ function M.getenv(elem, ident,...)
   local currentenv ={}
   for k,v in pairs(M.env) do currentenv[k] = v end
   if elem and elem.tag then
+    --print(elem.tag)
     currentenv['_'..elem.tag]= elem
   end
   currentenv['i']= ident or 1
@@ -123,9 +124,11 @@ local defaultenv = {
   purelinkto    = purelinkto,
   fulllinkto    = fulllinkto,
   prettyname    = function(s) return s end,
-  getelement    = function(s) return nil end
+  getelement    = function(s) return nil end,
+  _debug        = true,
 }
 
+
 -- this is the global env accessible in the templates
 -- env should be redefine by docgenerator user to add functions or redefine it.
 M.env = defaultenv