I have recently download this minecraft mod called Resource pack Organizer even tho I can just not use it I would like to use it and every time I try to switch packs It wont let me and glitches out.

Any help?

Does this happen without any other mods installed?

no

Well, can you check which mod is conflicting?

Sure Ill get to you when I can rn Im doing something but when im done Ill see which mod is.

Optifine seems to be the issue right when I put optifine in my mods folder it happens and I found another glitch where i can use the thing to scroll down the pack

Optifine conflicts with quite a few mods, so not sure I can do anything about that.

Okay Thanks for the help.