Upgrading to DNN 8.03.05 from 8.02.02

ERROR 

Access to the path 'C:\Inetpub\vhosts\rocket.com\httpdocs\installBlocker.lock' is denied.

   installblocker.lock is not present in /httpdocs using windows explorer set with show hidden files

permissions were reset using plesk 12.5

upgrade files were reloaded manually

I do not see the installblocker.lock file in the upgrade package.

ASP.NET is not authorized to access the requested resource. Consider granting access rights to the resource to the ASP.NET request identity. ASP.NET has a base process identity (typically {MACHINE}\ASPNET on IIS 5 or Network Service on IIS 6 and IIS 7, and the configured application pool identity on IIS 7.5) that is used if the application is not impersonating. If the application is impersonating via <identity impersonate="true"/>, the identity will be the anonymous user (typically IUSR_MACHINENAME) or the authenticated request user. 

To grant ASP.NET access to a file, right-click the file in File Explorer, choose "Properties" and select the Security tab. Click "Add" to add the appropriate user or group. Highlight the ASP.NET account, and check the boxes for the desired access.

[UnauthorizedAccessException: Access to the path 'C:\Inetpub\vhosts\rocket.com\httpdocs\installBlocker.lock' is denied.]
   System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) +217
   System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost) +1305
   System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize) +63
   DotNetNuke.Services.Installer.Blocker.InstallBlocker.RegisterInstallBegining() +62
   DotNetNuke.Services.Install.Install.UpgradeApplication() +207
   DotNetNuke.Services.Install.Install. (EventArgs e) +369
   System.Web.UI.Adapters.ControlAdapter. (EventArgs e) +12
   System.Web.UI.Control.LoadRecursive() +9716430
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +772