Hi, I bumped into the below unhandled exception when trying to install the setup. pls find more details below. See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box. ************** Exception Text ************** System.ArgumentException: Item has already been added. Key in dictionary: 'DotNETFramework35SP1' Key being added: 'DotNETFramework35SP1' at System.Collections.Hashtable.Insert(Object key, Object nvalue, Boolean add) at System