Nostalrius Begins - Quality wow vanilla realm (1.12)

Hi, I have this problem (as the title says) that basically there is an invisible wall along Ashenvale for me, I saw people walk past, but I can't and when I jump onto it, I get stuck in the air as if I was falling and then I have to Alt F4 out of the game because I can't click exit because I'm falling. Is there any way to solve this? Thanks in advance (Shockstorm, female undead warlock - PvE server)

Try deleting your WDB folder (in your WOW directory).

Nope, didn't work

it might be a system/graphics issue. same thing happened to me when patch 1.8 came out. goto the windows\system32 and remove/delete the current dynamic link libraries (*.dll) and reboot your machine. they will reset when windows loads and you should be able to get by it