fedora 20 sublime_text 2 gbk中文乱码问题

ta_shuo

为了能够在Sublime Text下查看gbk编码的中文，我安装了Converttoutf8这个插件，但是安装后出了问题，下面是ST控制台下的追踪信息：
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Reloading plugin /home/ta_shuo/.config/sublime-text-2/Packages/ConvertToUTF8/ConvertToUTF8.py
Traceback (most recent call last):
  File "./sublime_plugin.py", line 62, in reload_plugin
  File "./ConvertToUTF8.py", line 188, in <module>
    init_settings()
  File "./ConvertToUTF8.py", line 156, in init_settings
    encoding_cache = EncodingCache()
  File "./ConvertToUTF8.py", line 44, in __init__
    self.load()
  File "./ConvertToUTF8.py", line 67, in load
    self.cache = json.load(fp)
  File ".\json\__init__.py", line 267, in load
  File ".\json\__init__.py", line 307, in loads
  File ".\json\decoder.py", line 319, in decode
  File ".\json\decoder.py", line 338, in raw_decode
ValueError: No JSON object could be decoded
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然后我打开一个gbk编码的文件，ST控制台的出错信息：
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Unable to auto detect encoding, using fallback encoding Western (Windows 1252)
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请问可能是哪里的问题？