System.TimeoutException and System.UnauthorisedAccessException in Release mode

[Hima Bindu]

Hello,

I am using NAppupdate library to update my application in the following main steps:

1. Check for updates: 

      updManager.CheckForUpdates();

2. Prepare Update:

     updManager.PrepareUpdates();

3. Apply Updates: (Exception 1)

   updManager.ApplyUpdates(true, true, true);              

4. Rollback update: (if anything goes wrong)  (Exception 2)

UpdateManager.Instance.RollbackUpdates();

It works perfectly fine in debug mode.However, in release mode,I get the following exception 

(Exception 1)

"System.TimeoutException: The NamedPipeServerStream timed out waiting for a named pipe connection, but the process has exited with exit code: -532459699(System.Runtime.InteropServices.ComException)"

(Exception 2)

"System.UnauthorisedAccessException: Access to the path <EXEPATH> is denied 

at System.IO._Error.WinIOError(Int32 errorCode,String maybeFullPath)

at System.IO.File.Internalelete(String path,Boolean checkHost)

at System.IO.File.Delete(String path)

at NAppUpdate.Framework.Tasks.FileUpdateTask.Rollback()"

Can you please guide me to fix this exception during release mode?