There is no problem with the Prowler.exe install file itself, as they all stem from one source. I cannot download from a specific download site. Please let us know the URL of that site and we will investigate. Try another download site in the meantime. The first time you use the Advisor Services of the Prowler program you will be asked to register.
Registration is free.
It simply lets us know how to contact you with updates and support materials. Registration is a simple process you only need to complete once. If you wish to register later, simply select later when you are asked to Register. If registration is complete, the program will thank you for registering and advise that registration is complete. That's all there is to it.