Error While Installing Application

I attempted to reinstall Wemod and recieved the error “There was an error while installing the application. Check the setup log for more information and contact the author.” However, there is no setup log (the “Open Setup Log” button does nothing).

My antivirus is turned off completely. I have deleted the Users\AppData\Local\Wemod and Roaming\Wemod folders and tried installing again and I get the same error. The application was working fine before now, this problem only began a couple days ago. How can I get it to install?