Cannot get this roster editor to install 
running windows 7 32-bit 
 
after running the setup file and choosing directory to install it says 
 
"error opening file for writing 
 C:\program files ................. etc. 
  
 Click abort to stop the installation, retry to try again or ignore to skip this file" 
 
I've tried using 7-zip to directly extract the file but it says cannot open the output file 
 
any suggestions? 
thanks!