Could be VSE or HIP blocking the install. Are you logged in as administrator?
MSI errors 1708 and 1603 are really worthless. 1708 is installation operation failed and 1603 is fatal error during installation.
Have you tried 9.0 or 9.1?
The Forum Administrator, April Jacobs, is trying to reach you but it appears that some emails and PM's from this board are not getting through to your email address which I believe is a disposable one (only visible to board admins and mods).
Please PM her on her profile (over at the right side) HERE.
How the installation of DLP 9 can help?
I tries to install it via EPO i get the same error...