Office 2010 and PHStat2 error has occurred

Hi, I recently installed a PHStat2 Add-in program for Microsoft Excel but I received this annoying error message when I attempted to run it with Excel. I am running Windows 7 Operating System and looking for proper resolution. Help me. Thanks.

PHStat2 Add-in: PHStat2 cannot find the required PHStat2 system file. You may need to rerun the PHStat2 setup program with the proper account privilieges.
