Build crashed if default_locate is not "en"

[VitalyOrbit]

[ INFO] Contact extensions@kangoextensions.com to enable IE support
[ INFO] Running Kango v1.8.0
[ INFO] Building chrome extension...
Traceback (most recent call last):
File "kango/kango.py", line 18, in
main()
File "kango/kango.py", line 10, in main
CommandLineProcessor().process()
File "/run/media/local/USB DISK/PROJECTS/CROSS/kango/kango/commands/processor.py", line 55, in process
args.execute(args)
File "/run/media/local/USB DISK/PROJECTS/CROSS/kango/kango/commands/build.py", line 230, in execute
builder.build(project_dir, args, self._builder_cls, self._build_steps)
File "/run/media/local/USB DISK/PROJECTS/CROSS/kango/kango/commands/build.py", line 144, in build
self._build_extension(builderClass, project_dir, out_path, cmd_args, build_steps, ignore)
File "/run/media/local/USB DISK/PROJECTS/CROSS/kango/kango/commands/build.py", line 125, in _build_extension
certificates_path, cmd_args)
File "/run/media/local/USB DISK/PROJECTS/CROSS/kango/kango/builders/chrome.py", line 245, in pack
shutil.move(extension_dst, crx_path)
File "/usr/lib64/python2.7/shutil.py", line 302, in move
copy2(src, real_dst)
File "/usr/lib64/python2.7/shutil.py", line 130, in copy2
copyfile(src, dst)
File "/usr/lib64/python2.7/shutil.py", line 82, in copyfile
with open(src, 'rb') as fsrc:

[VitalyOrbit]

Found bug.
My locale JSON was correct, but key was "__info__description__" instead of "__info_description__" (double dush in the middle).
My failure, but I don't think there should be that exception.