Blank flash player installer

I've been having problems with installing the latest flash for Opera on W10. I download the installer from the official site, launch it, and it gives me a blank Adobe Download Manager with no text or images, and when I close it, it just sends me back to the download website. Is there a way to fix this issue? I'm using Opera Version 49 and Windows 10 Pro version 10240. I've tried running the program as administrator and uninstalled all other versions of Flash to no avail.