Autotune error on setup? pls help!!!

hi guy's  

so i am trying to install antares autotune vst v5.09 and every time i try it it comes up with this error message that at first says Error "Access is denied."

Then when I click OK it comes up with another message which says Error "Access violation at address 004613B2 in module 'setup.exe.tmp.' Read of address 00000358"

Any idea's on what would fix this?