Jason, I tried to open the php file in Internet Explorer, but I got the attached message.
I also noticed that when I went to locate the file on localhost, the file 'WAVT_CaptchaSecurityImages.php' was not transferred over to the folder called WA_ValidationToolkit. However the other 3 php files were transferred over. I copied the file called 'WAVT_CaptchaSecurityImages.php' into the folder on localhost and proceeded to open this in the browser. As I said at the beginning, I got the attached message - Mike