sping115116:
方法好用，但是这里有一点补充下，不用卸载重新装，修改下
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{57FA2D12-D22D-490A-805A-5CB48E84F12A}\InProcServer32]
@="C:\\Program Files\\Beyond Compare 4\\BCShellEx64.dll"
"ThreadingModel"="Apartment"
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Classes\CLSID\{57FA2D12-D22D-490A-805A-5CB48E84F12A}]
@="CirrusShellEx"
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Classes\CLSID\{57FA2D12-D22D-490A-805A-5CB48E84F12A}\InProcServer32]
@="C:\\Program Files\\Beyond Compare 4\\BCShellEx.dll"
"ThreadingModel"="Apartment"
这两个路径就行