Can someone help me with this?

[egg75o1]

I've been dealing with this for a while now. I basically can't use the advanced texture pack! I know my computer can do it easy! it did it fine, but after this update, if I pick it after the lowest quality one is done, It freezes. If I pick it before it does it goes to it, (So now I know it can do it for sure) But then just changes back. Its been months and I hate it. Can anyone help me?

 

[Kendrq]

Have you tried disabling resource packs for the server then manually downloading and installing one of the packs here?