Showing error while installing Flashplayer

Hello,
when I am trying to install Flash player is showing the error window
"The system DLL user32.dll was relocated in memory. The application will not run properly. The relocation occurred because the DLL C:\WINDOWS\system32\Shell32.dll occupied an address range reserved for Windows system DLLs. The vendor supplying the DLL should be contacted for a new DLL."

Please Help