I have this error when trying to launch Quark with Optifine pre13 and pre10. Apparently there is a problem with the pickarang, i tried disabling it in the config but it does not work. As soon as I remove Optifine the game works properly.

---- Minecraft Crash Report ----
// Why did you do that?

Time: 5/04/20 16:05
Description: Initializing game

java.lang.IllegalStateException: No renderer registered for quark:pickarang
at net.minecraft.client.renderer.entity.EntityRendererManager.(EntityRendererManager.java:222) ~[?:?] {re:classloading,pl:accesstransformer:B,xf:fml:quark:add-render,xf:OptiFine:default}
at net.minecraft.client.Minecraft.(Minecraft.java:425) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at net.minecraft.client.main.Main.main(SourceFile:166) [?:?] {re:classloading}
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_51] {}
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_51] {}
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51] {}
at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51] {}
at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:56) [forge-1.15.2-31.1.0.jar:31.1] {}
at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$407/1954355506.call(Unknown Source) [forge-1.15.2-31.1.0.jar:31.1] {}
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-5.0.0-milestone.4.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-5.0.0-milestone.4.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-5.0.0-milestone.4.jar:?] {}
at cpw.mods.modlauncher.Launcher.run(Launcher.java:81) [modlauncher-5.0.0-milestone.4.jar:?] {}
at cpw.mods.modlauncher.Launcher.main(Launcher.java:65) [modlauncher-5.0.0-milestone.4.jar:?] {}

A detailed walkthrough of the error, its code path and all known details is as follows:

-- Head --
Thread: Render thread
Stacktrace:
at net.minecraft.client.renderer.entity.EntityRendererManager.(EntityRendererManager.java:222)
at net.minecraft.client.Minecraft.(Minecraft.java:425)

-- Initialization --
Details:
Stacktrace:
at net.minecraft.client.main.Main.main(SourceFile:166)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:56)
at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$407/1954355506.call(Unknown Source)
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37)
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54)
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72)
at cpw.mods.modlauncher.Launcher.run(Launcher.java:81)
at cpw.mods.modlauncher.Launcher.main(Launcher.java:65)

Optifine 1.15 is currently incompatible with forge.