重装cloud系统后无法打开

打开cloud程序报错，重新卸载了cloud6.0并重新安装之前安装过补丁PT800897，管理中心无法打开，打开登陆客户端提示：由于目标计算机积极拒绝，无法连接。 127.0.0.1:8000
site.log文件内容如下

2016/1/26 16:43:30: Start remove site :MCSiteManager
2016/1/26 16:43:30: Error remove site:MCSiteManager
2016/1/26 16:43:30: ***********Detail**********
2016/1/26 16:43:30: 对象标识符没有表示一个有效的对象。 (Exception from HRESULT: 0x800710D8) at Microsoft.Web.Administration.Interop.IAppHostMethodInstance.Execute()
at Microsoft.Web.Administration.ConfigurationElement.ExecuteMethod(String methodName)
at Microsoft.Web.Administration.Site.Stop()
at Kingdee.BOS.Management.Website.IIS7.WebsiteBuilder.RemoveWebsite(String siteName)
at Kingdee.BOS.Management.Website.Manager.SiteManagerBase.SiteRemove()
2016/1/26 16:43:30: Start remove site :FileServerSiteManager
2016/1/26 16:43:30: Finish remove site :FileServerSiteManager
2016/1/26 16:43:30: begin register Asp.NET
2016/1/26 16:43:48: finish register Asp.NET
2016/1/26 16:43:49: Start create site :MCSiteManager
2016/1/26 16:44:15: Error create site:MCSiteManager
2016/1/26 16:44:15: ***********Detail**********
2016/1/26 16:44:15: 站点ManageSite已经存在，IIS7不允许创建同名站点 at Kingdee.BOS.Management.Website.IIS7.WebsiteBuilder.CreateWebsite(String localPath, String siteName, Int32 port, String protocol, AppPoolIdentityType appPoolIdentityType, String publishChannel, String defaultPage, String uName, String uPwd)
at Kingdee.BOS.Management.Website.Manager.SiteManagerBase.SiteCreate()
2016/1/26 16:44:15: Start create site :FileServerSiteManager
2016/1/26 16:44:16: Finish create site :FileServerSiteManager
2016/1/26 16:44:16: Start remove site :BizSiteManager
2016/1/26 16:44:17: Finish remove site :BizSiteManager
2016/1/26 16:44:17: Start remove site :ComputingSiteManager
2016/1/26 16:44:17: Finish remove site :ComputingSiteManager
2016/1/26 16:44:17: begin register Asp.NET
2016/1/26 16:44:33: finish register Asp.NET
2016/1/26 16:44:33: Start create site :BizSiteManager
2016/1/26 16:44:37: Finish create site :BizSiteManager
2016/1/26 16:44:37: Start create site :ComputingSiteManager
2016/1/26 16:44:37: Finish create site :ComputingSiteManager
2016/1/26 16:44:38: Start remove site :BizSiteManager
2016/1/26 16:44:38: Finish remove site :BizSiteManager
2016/1/26 16:44:38: begin register Asp.NET
2016/1/26 16:44:55: finish register Asp.NET
2016/1/26 16:44:55: Start create site :BizSiteManager
2016/1/26 16:44:55: Error create site:BizSiteManager
2016/1/26 16:44:55: ***********Detail**********
2016/1/26 16:44:55: 站点Default Web Site已经有一个名为K3CloudFileServer的虚拟目录 at Kingdee.BOS.Management.Website.IIS7.WebsiteBuilder.CreateVirtualDirectory(String localPath, String hostingSite, String vdName, String protocol, AppPoolIdentityType appPoolIdentityType, String publishChannel, String defaultPage, String uName, String uPwd)
at Kingdee.BOS.Management.Website.Manager.SiteManagerBase.SiteCreate()