有可能因突然系统掉电引发。重起系统后，WINCC进入演示模式，并弹出授权过期对话框。估计授权损坏，请教如何处理？
WinCC安装目录\diagnose\license.log文件的内容：
05/09/2006 14:31:00 Control Center - Demo Mode ConfigurationSystem enabled -
05/09/2006 14:31:00 NoLicense CS Name of License = A9WRC?0600 Text of License = Simatic WinCC RC (Runtime + Development) Exists = No
05/09/2006 14:31:00 InitLicense CS AppName = AppCS:Mcp CycleCheck = yes NameForMessageBox = Name of License = A9WRC?0600 Text of License = Simatic WinCC RC (Runtime + Development)
05/09/2006 14:31:00 NoLicense ED Name of License = A9WRC?0600 Text of License = Simatic WinCC RC (Runtime + Development) Exists = No
05/09/2006 14:31:00 Control Center - Demo Mode Editors enabled -
05/09/2006 14:31:00 InitLicense ED AppName = AppEd:Mcp CycleCheck = own NameForMessageBox = Name of License = A9WRC?0600 Text of License = Simatic WinCC RC (Runtime + Development)
05/09/2006 14:31:07 Control Center - Demo Mode ConfigurationSystem enabled -
05/09/2006 14:31:07 InitLicense CS AppName = AppCS:TlgASO CycleCheck = yes NameForMessageBox = Name of License = A9WTG?0600 Text of License = Simatic WinCC TagLogging (Runtime + Development)


WinCC安装目录\diagnose\Authorinformation.inf文件的内容：
License installed needed to install Product
SIFLA9WRC40600 Yes [TONGHAI] Yes No WinCC Runtime+Configuration 64K PowerTags 512 Archive Tags