@superwill were you ever able to get SSB installed? I am having the exact same issue - WUDD rip seems to go fine, but subsequent installation with WUP Installer GX2 hangs at 53%, same as you to the tenth of a MB so clearly not a coincidence.
The background animation on WUP installer...
Man we were gonna have a game night at my buddy's house but he wasn't feeling great so he canceled, which throws my dinner plans up into the air, so I guess it's time to order a pizza or something