diff --git a/tasks/converter/logger.rb b/tasks/converter/logger.rb
index f3b1ee14..66a9e313 100644
--- a/tasks/converter/logger.rb
+++ b/tasks/converter/logger.rb
@@ -32,6 +32,7 @@ class Converter
     end
 
     def log_http_get_files(files, from, cached = false)
+      return if files.empty?
       s = "  #{'CACHED ' if cached}GET #{files.length} files from #{from} #{files * ' '}..."
       if cached
         puts dark green s
diff --git a/tasks/converter/network.rb b/tasks/converter/network.rb
index 4b0c8e7e..a5ec9561 100644
--- a/tasks/converter/network.rb
+++ b/tasks/converter/network.rb
@@ -14,8 +14,8 @@ class Converter
       log_http_get_files files, full_path, false
       files.map do |name|
         Thread.start {
-          content = open("#{full_path}/#{name}").read
-          Thread.exclusive { write_cached_files path, name => content }
+          contents[name] = open("#{full_path}/#{name}").read
+          Thread.exclusive { write_cached_files path, name => contents[name] }
         }
       end.each(&:join)
       contents
@@ -29,8 +29,8 @@ class Converter
           path = "#{full_path}/#{name}"
           contents[name] = File.read(path, mode: 'rb') if File.exists?(path)
         end
-        contents
       end
+      contents
     end
 
     def write_cached_files(path, files)