here are what you need to do. this is from microsoft.
RESOLUTION
To resolve this issue:
1.Click Start, click Search, and then click For Files and Folders.
2.In the Search for files or folders named box, type setupx.dll, click Local Hard Drives in the Look in box, and then press ENTER.
3.Right-click the Setupx.dll file, click Rename, type setupx.old, and then press ENTER.
4.Extract a new copy of the Setupx.dll file to your computer. For additional information about how to extract a file, click the article number below to view the article in the Microsoft Knowledge Base:
click the link below for the replacement or how to extract the file from above that is needed to be replaced..