If you are using windows vista you need administrative credentials to run the application. 
You may try with a RightClick on the psychology_search_tool.exe file then select "Run as Administrator". 
The application was tested on 3 platforms and it runs just smoothly, but just in case www.psychology-search.com 
is not liable for any damage to your system resulting from the installation of the psychology_search_tool.exe file.
__________                     __            __                       
\______   \_________ __  ____ |  |__   ____ |  |   ____   ____ ___ __ 
 |     ___/  ___<   |  |/ ___\|  |  \ /  _ \|  |  /  _ \ / ___<   |  |
 |    |   \___ \ \___  \  \___|   Y  (  <_> )  |_(  <_> ) /_/  >___  |
 |____|  /____  >/ ____|\___  >___|  /\____/|____/\____/\___  // ____|
              \/ \/         \/     \/                  /_____/ \/     
  _________                            __      ___________            __   
 /   _____/ ____ _____ _______   ____ |  |__   \__    ___/___   ____ |  |  
 \_____  \_/ __ \\__  \\_  __ \_/ ___\|  |  \    |    | /  _ \ /  _ \|  |  
 /        \  ___/ / __ \|  | \/\  \___|   Y  \   |    |(  <_> |  <_> )  |__
/_______  /\___  >____  /__|    \___  >___|  /   |____| \____/ \____/|____/
        \/     \/     \/            \/     \