Fixes Caterpillar crashing while generating report.

src/caterpillar.py

 #!/usr/bin/env python2
 # -*- coding: utf-8 -*-
 
 # Copyright 2015 Google Inc. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
@@ skipping 737 matching lines @@
   for api, manifest in polyfill_manifests.iteritems():
     if (manifest['status'] != 'total' and
         api not in {'app.window', 'app.runtime'}):
       status = 'partial'
       break
   # TODO(alger): Detect fatal errors which would give a none status.
 
   # Finally, generate and write a conversion report.
   abs_report_dir = os.path.join(output_dir, report_dir)
   report.generate_and_write(abs_report_dir, chrome_app_manifest,
-      polyfill_manifests, status, captured_warnings, output_dir)
+      polyfill_manifests, status, captured_warnings, output_dir,
+      boilerplate_dir)
 
   logging.info('Done.')
 
 
 class Formatter(logging.Formatter):
   """Caterpillar logging formatter.
 
   Adds color to the logged information.
   """
 
@@ skipping 85 matching lines @@
     configuration.generate_and_save(args.output, args.interactive)
 
   elif args.mode == 'convert':
     config = configuration.load(args.config)
     convert_app(args.input, args.output, config, handler.captured_warnings,
                 args.force)
 
 
 if __name__ == '__main__':
   sys.exit(main())