diff --git a/src/coffee/models/parser_versions/mod_parser_v1.coffee b/src/coffee/models/parser_versions/mod_parser_v1.coffee
index 94b86a7fb..3c2c25f50 100644
--- a/src/coffee/models/parser_versions/mod_parser_v1.coffee
+++ b/src/coffee/models/parser_versions/mod_parser_v1.coffee
@@ -25,7 +25,7 @@ module.exports = class ModParserV1 extends CommandParserVersionBase
 
     _command_author: (authorParts...)->
         if @_rawData.author? then throw new Error 'duplicate declaration of "author"'
-        author = authorParts.join ''
+        author = authorParts.join ', '
         if author.length is 0 then throw new Error '"author" cannot be empty, but may be omitted'
 
         @_rawData.author = author
diff --git a/src/coffee/models/parser_versions/mod_version_parser_v1.coffee b/src/coffee/models/parser_versions/mod_version_parser_v1.coffee
index 3540ff702..1cdd772a9 100644
--- a/src/coffee/models/parser_versions/mod_version_parser_v1.coffee
+++ b/src/coffee/models/parser_versions/mod_version_parser_v1.coffee
@@ -153,7 +153,7 @@ module.exports = class ModVersionParserV1 extends CommandParserVersionBase
 
         createSlug = (name)=>
             item = @_rawData.items[name]
-            if item?
+            if item? and item.type isnt 'update'
                 slug = new ItemSlug modVersion.modSlug, _.slugify name
             else
                 slug = new ItemSlug _.slugify name
@@ -198,6 +198,7 @@ module.exports = class ModVersionParserV1 extends CommandParserVersionBase
             pattern: recipeData.pattern
             tools:   toolStacks
 
+        logger.debug "adding recipe: #{recipe}"
         modVersion.addRecipe recipe
         return recipe
 
diff --git a/src/coffee/models/recipe.coffee b/src/coffee/models/recipe.coffee
index aa2a6ddac..a789ba394 100644
--- a/src/coffee/models/recipe.coffee
+++ b/src/coffee/models/recipe.coffee
@@ -107,7 +107,7 @@ module.exports = class Recipe extends BaseModel
                 @_produces[stack.itemSlug.qualified] = true
                 @_produces[stack.itemSlug.item] = true
 
-        return @_produces[itemSlug.qualified]
+        return @_produces[itemSlug.qualified] or @_produces[itemSlug.item]
 
     requires: (itemSlug)->
         for stack in @input