Win7 64位旗舰版安装odoo9.0后，服务启动后出错，提示如下

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win7 64位旗舰版安装odoo9.0后，服务启动后出错，在windows事件日志中，看到出错的提示如下，请问各位可知道什么问题？

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The instance's SvcRun() method failed
Traceback (most recent call last):
File "win32serviceutil.pyo", line 835, in SvcRun
File "win32_service.pyo", line 42, in SvcDoRun
SystemExit: 255
%2: %3