I wrote in the Interactive Lua Prompt on a Turtle peripheral.wrap("right").getNearbyPlayers(20) and it says Java Exception Thrown.

We can't reproduce this, we've tried using the turtle with the upgrade on both sides and we've tried just the computer with the peripheral block next to it and it worked perfectly in all cases.

Mind telling us the mods (with versions) you used and the FML log that generated when this problem occured so we could investigate more?

Did you try it on Multiplayer? Because I'm only able to replicate it on Multiplayer. I only have ComputerCraft 1.65 and Peripherals++ 1.3.0-71 installed.

Also, I don't see anything relevant in the FML log, because it doesn't crash anything.

I updated ComputerCraft to 1.73 and it's says Java Exception Thrown: java.lang.NoSuchMethodError: net.minecraft.entity.player.EntityPlayer.func_70666_h(F)Lnet/minecraft/util/Vec3;

Confirmed, Java exception thrown when using on a server.

Can you please upload the full FML log? You can find it under (instance name)/minecraft/logs/
Search for the latest, upload it on pastebin and post the link here please.

It's too big for Pastebin. 512kb limit.

Yeah, I know what's wrong. I will release an update in around 10-20 minutes