OpenGL Error: 1283 Stack Overflow

[Gamerbolts]

Hi, I am building a modpack and had a tester on the server and he got an opengl error and his character flipped and yeah. I checked the log because i noticed he had a chisel from DaVincing and found this in there. Any idea what's going on?

https://cdn.discordapp.com/attachments/320809481233498112/322287435839045632/unknown.png

[03:22:31] [Server thread/WARN]: Unable to read image from NBT data. Image might be lost. java.lang.NullPointerException at two.davincing.painting.PaintingEntity.imageFromNBT(PaintingEntity.java:21) [PaintingEntity.class:?] at two.davincing.painting.PaintingEntity.getPaintingFromItem(PaintingEntity.java:42) [PaintingEntity.class:?] at two.davincing.item.CanvasItem.func_77648_a(CanvasItem.java:46) [CanvasItem.class:?] at net.minecraftforge.common.ForgeHooks.onPlaceItemIntoWorld(ForgeHooks.java:535) [ForgeHooks.class:1.7.10-1614.58] at net.minecraft.item.ItemStack.func_77943_a(ItemStack.java:164) [add.class:?] at net.minecraft.server.management.ItemInWorldManager.func_73078_a(ItemInWorldManager.java:498) [mx.class:?] at net.minecraft.network.NetHandlerPlayServer.func_147346_a(NetHandlerPlayServer.java:861) [nh.class:?] at net.minecraft.network.play.client.C08PacketPlayerBlockPlacement.func_148833_a(SourceFile:60) [jo.class:?] at net.minecraft.network.play.client.C08PacketPlayerBlockPlacement.func_148833_a(SourceFile:9) [jo.class:?] at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:245) [ej.class:?] at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:181) [nc.class:?] at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:1023) [MinecraftServer.class:?] at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:432) [lt.class:?] at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:841) [MinecraftServer.class:?] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:693) [MinecraftServer.class:?] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_131] [03:23:29] [Server thread/WARN]: Unable to read image from NBT data. Image might be lost. java.lang.NullPointerException at two.davincing.painting.PaintingEntity.imageFromNBT(PaintingEntity.java:21) [PaintingEntity.class:?] at two.davincing.painting.PaintingEntity.getPaintingFromItem(PaintingEntity.java:42) [PaintingEntity.class:?] at two.davincing.item.CanvasItem.func_77648_a(CanvasItem.java:46) [CanvasItem.class:?] at net.minecraftforge.common.ForgeHooks.onPlaceItemIntoWorld(ForgeHooks.java:535) [ForgeHooks.class:1.7.10-1614.58] at net.minecraft.item.ItemStack.func_77943_a(ItemStack.java:164) [add.class:?] at net.minecraft.server.management.ItemInWorldManager.func_73078_a(ItemInWorldManager.java:498) [mx.class:?] at net.minecraft.network.NetHandlerPlayServer.func_147346_a(NetHandlerPlayServer.java:861) [nh.class:?] at net.minecraft.network.play.client.C08PacketPlayerBlockPlacement.func_148833_a(SourceFile:60) [jo.class:?] at net.minecraft.network.play.client.C08PacketPlayerBlockPlacement.func_148833_a(SourceFile:9) [jo.class:?] at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:245) [ej.class:?] at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:181) [nc.class:?] at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:1023) [MinecraftServer.class:?] at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:432) [lt.class:?] at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:841) [MinecraftServer.class:?] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:693) [MinecraftServer.class:?] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_131]

[Gamerbolts]

Here is my modlist, just in case you needed that

https://docs.google.com/spreadsheets/d/16V8wYCzGRSHEAsuIk1tNo7cQBZSlljk-K2dOtc2_slA/edit?usp=sharing