When you download the executable, are you saving it to a specific location? This is the prefered method. There is an easy way to check the file integrity. Right mouse click on the file and click on Properties. There should be a Digital Signatures tab on the file properties dialog. What is the date for the Digital Signature? Also, check the file size. It should be somewhere around 375MB. Are you using a fast internet connection? How long did it take to download the file? Regards, Rick B.