Pretty surprisingly... after it was done patching for 3+ hours tonight... The errors and crashing went away! It patched like normal and I played with the normal patch, no fixes or anything needed. I've always considered reinstallation a debugging method, and usually tell people to try to reinstall it before saying the program's broke, I can't play this game or do this anymore.
Hey guys! I actually managed to get on by a fluke, and hopefully this will work for some of you. What worked for me was just running the game without running as administrator-- I still used the launcher, it patched for a few minutes, but without running as admin it loaded and I was able to get on and play. The English patch didn't work when I tried it though, so that's the only problem (Anyone who can get online have a solution for that?). Also heard there are a few small bugs going around with flying and other little things, but other than that everything seems to work.
I also did download that new lang0.pak that Marugoto made, but didn't have to re-install the whole game or anything like that.