I encountered this same issue and have yet to sort it out. Here's what I've got so far:
1. Uninstalled PRO
- including desktop shortcut
2. DL latest version of PRO64 from MediaFire
- I'm running a 64bit OS
- The google DL link doesn't work
3. *ISSUE* Can't extract file "resources.assets.resS"
- attempted Extract All as well as locating and moving the file from archive and both fail
I can launch the game normally and in admin but neither case will fix the Black Screen. My assumption is those assets are missing due to the failed extraction. But so far I haven't found a method online to force the resources.assets.resS file out of that archive. So it seems that unless I can somehow get that file the game is broken.