I downloaded forge on my macbook and when I try to start minecraft, it crashes. It says I am using an unsupported modified version of the game so it immediately crashes when I open it. How can I fix this??

Edited July 23, 20178 yr by ImSimplyAlex
Specification

So I can't download forge on my computer?

Edited July 23, 20178 yr by ImSimplyAlex
Specification

5 minutes ago, diesieben07 said:

Post the FML log.

 

How do I post it?

 

Okay. Ill post it but where do I find the FML log?

Spoiler

 

[19:26:31] [main/ERROR]: Can't find the resource index file: assets/indexes/1.7.10.json
[19:26:31] [Client thread/INFO]: LWJGL Version: 2.9.1
[OptiFine] 
[OptiFine] OptiFine_1.7.10_HD_U_D6
[OptiFine] Build: null
[OptiFine] OS: Mac OS X (x86_64) version 10.10.5
[OptiFine] Java: 1.8.0_101, Oracle Corporation
[OptiFine] VM: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
[OptiFine] LWJGL: 2.9.1
[OptiFine] OpenGL: Intel HD Graphics 5000 OpenGL Engine, version 2.1 INTEL-10.6.33, Intel Inc.
[OptiFine] OpenGL Version: 2.1
[OptiFine] Maximum texture size: 16384x16384
[OptiFine] (Reflector) Class not present: ModLoader
[OptiFine] (Reflector) Class not present: net.minecraft.src.FMLRenderAccessLibrary
[OptiFine] (Reflector) Class not present: FMLRenderAccessLibrary
[OptiFine] (Reflector) Class not present: LightCache
[OptiFine] (Reflector) Class not present: BlockCoord
[OptiFine] (Reflector) Class not present: net.minecraftforge.common.MinecraftForge
[OptiFine] (Reflector) Class not present: net.minecraftforge.common.ForgeHooks
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.MinecraftForgeClient
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.ForgeHooksClient
[OptiFine] (Reflector) Class not present: cpw.mods.fml.common.FMLCommonHandler
[OptiFine] (Reflector) Class not present: cpw.mods.fml.client.FMLClientHandler
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.IItemRenderer$ItemRenderType
[OptiFine] (Reflector) Method not present: LI.getSkyRenderer
[OptiFine] (Reflector) Method not present: LI.getCloudRenderer
[OptiFine] (Reflector) Method not present: LI.getWeatherRenderer
[OptiFine] (Reflector) Method not present: LC.countEntities
[OptiFine] (Reflector) Method not present: LC.finishSetup
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.IRenderHandler
[OptiFine] (Reflector) Class not present: net.minecraftforge.common.DimensionManager
[OptiFine] (Reflector) Class not present: net.minecraftforge.event.world.WorldEvent$Load
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.event.GuiScreenEvent$DrawScreenEvent$Pre
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.event.GuiScreenEvent$DrawScreenEvent$Post
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.event.EntityViewRenderEvent$FogColors
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.event.EntityViewRenderEvent$FogDensity
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.event.EntityViewRenderEvent$RenderFogEvent
[OptiFine] (Reflector) Class not present: cpw.mods.fml.common.eventhandler.EventBus
[OptiFine] (Reflector) Class not present: cpw.mods.fml.common.eventhandler.Event$Result
[OptiFine] (Reflector) Class not present: net.minecraftforge.event.ForgeEventFactory
[OptiFine] (Reflector) Class not present: net.minecraftforge.event.world.ChunkWatchEvent$UnWatch
[OptiFine] (Reflector) Method not present: hd.getBedDirection
[OptiFine] (Reflector) Method not present: hd.isBedFoot
[OptiFine] (Reflector) Method not present: hd.canRenderInPass
[OptiFine] (Reflector) Method not present: hd.hasTileEntity
[OptiFine] (Reflector) Method not present: hd.canCreatureSpawn
[OptiFine] (Reflector) Field not present: vD.captureDrops
[OptiFine] (Reflector) Field not present: vD.capturedDrops
[OptiFine] (Reflector) Method not present: vD.shouldRenderInPass
[OptiFine] (Reflector) Method not present: vD.canRiderInteract
[OptiFine] (Reflector) Method not present: Jf.shouldRenderInPass
[OptiFine] (Reflector) Method not present: Jf.getRenderBoundingBox
[OptiFine] (Reflector) Method not present: Ao.onEntitySwing
[OptiFine] (Reflector) Method not present: FA.isCurativeItem
[OptiFine] (Reflector) Method not present: BF.hasEffect
[OptiFine] (Reflector) Method not present: Bq.getRecordResource
[OptiFine] (Reflector) Class not present: net.minecraft.launchwrapper.Launch
[OptiFine] (Reflector) Class not present: cpw.mods.fml.client.SplashProgress
[OptiFine] (Reflector) Class not present: optifine.OptiFineClassTransformer
[19:26:32] [Client thread/INFO]: Reloading ResourceManager: Default
[OptiFine] *** Reloading textures ***
[OptiFine] Resource packs: Default

Starting up SoundSystem...
[OptiFine] Multipass connected textures: false
[OptiFine] Loading texture map: textures/blocks
[OptiFine] Multipass connected textures: false
Initializing LWJGL OpenAL
    (The LWJGL binding of OpenAL.  For more information, see http://www.lwjgl.org)
OpenAL initialized.
[OptiFine] Texture size: textures/blocks, 512x256
[19:26:32] [Client thread/INFO]: Created: 512x256 textures/blocks-atlas
[OptiFine] Loading texture map: textures/items
[OptiFine] Texture size: textures/items, 256x256
[19:26:32] [Client thread/INFO]: Created: 256x256 textures/items-atlas
[32mCOSMIC >[0m Starting up CosmicClient ALPHA 1.1

[19:26:32] [Sound Library Loader/INFO]: Sound engine started
Could not load Properties file :
java.lang.NullPointerException
[32mCOSMIC >[0m Disabled Chunk Borders
[32mCOSMIC >[0m Disabled Glint Modifier
[32mCOSMIC >[0m Disabled Particle Multiplier
[32mCOSMIC >[0m Enabled Armor Status HUD
[32mCOSMIC >[0m Disabled Potion Colors
[32mCOSMIC >[0m Disabled TabbyChat
[32mCOSMIC >[0m Enabled Information HUD
[32mCOSMIC >[0m Enabled Notifications
[32mCOSMIC >[0m Disabled Potion Effects HUD
[32mCOSMIC >[0m Disabled Visual Keys HUD
[32mCOSMIC >[0m Enabled MapWriter
[32mCOSMIC >[0m Enabled ToggleSneak
[32mCOSMIC >[0m Enabled Cooldowns HUD
[32mCOSMIC >[0m Enabled Screen Uploader
[32mCOSMIC >[0m Disabled Enhanced FPS
[32mCOSMIC >[0m Added [37f77f3a-35e6-494f-a79c-2941bb3f2f84][PlayerAccount(headResource=null, displayName=ImSimplyAlex, [email protected], accessToken=90baceaa8ddf413abfe619a93b1f24c4, profileID=1aad84d5-774b-0635-5af9-1fde799aa56a)]
[32mCOSMIC >[0m Set active: 37f77f3a-35e6-494f-a79c-2941bb3f2f84
[32mCOSMIC >[0m clientToken: 80167607-5044-4b62-a027-684d54c30054
[32mCOSMIC >[0m Enabled ToggleSneak
[32mCOSMIC >[0m Enabled Potion Effects HUD
[32mCOSMIC >[0m Enabled Armor Status HUD
[32mCOSMIC >[0m Enabled Cooldowns HUD
[32mCOSMIC >[0m Enabled Notifications
[32mCOSMIC >[0m Enabled Information HUD
[32mCOSMIC >[0m Enabled Screen Uploader
[32mCOSMIC >[0m Attempting login. (PlayerAccount(headResource=minecraft:heads/ImSimplyAlex.png, displayName=ImSimplyAlex, [email protected], accessToken=90baceaa8ddf413abfe619a93b1f24c4, profileID=1aad84d5-774b-0635-5af9-1fde799aa56a); 37f77f3a-35e6-494f-a79c-2941bb3f2f84; 80167607-5044-4b62-a027-684d54c30054)
[19:26:35] [Client thread/INFO]: Logging in with access token
[OptiFine] *** Reloading custom textures ***
[OptiFine] Loading custom colors: textures/colormap/grass.png
[OptiFine] Loading custom colors: textures/colormap/foliage.png
[19:26:42] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:music.menu
[19:26:44] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:gui.button.press
[19:26:50] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:gui.button.press
[19:26:50] [Server thread/INFO]: Starting integrated minecraft server version 1.7.10
[19:26:50] [Server thread/INFO]: Generating keypair
[OptiFine] WorldServer.nextTickSet updated
[OptiFine] WorldServer.nextTickSet updated
[OptiFine] WorldServer.nextTickSet updated
[19:26:51] [Server thread/INFO]: Preparing start region for level 0
[19:26:51] [Server thread/WARN]: Skipping BlockEntity with id minecraft:mob_spawner
[19:26:51] [Server thread/WARN]: Skipping BlockEntity with id minecraft:chest
[19:26:51] [Server thread/WARN]: Skipping BlockEntity with id minecraft:chest
[19:26:51] [Server thread/WARN]: Skipping BlockEntity with id minecraft:mob_spawner
[19:26:51] [Server thread/WARN]: Skipping BlockEntity with id minecraft:chest
[19:26:51] [Server thread/WARN]: Skipping BlockEntity with id minecraft:chest
[19:26:51] [Server thread/WARN]: Skipping BlockEntity with id minecraft:chest
[19:26:51] [Server thread/WARN]: Skipping BlockEntity with id minecraft:chest
[19:26:51] [Server thread/WARN]: Skipping BlockEntity with id minecraft:chest
[19:26:52] [Server thread/WARN]: Skipping BlockEntity with id minecraft:chest
[19:26:52] [Server thread/WARN]: Skipping BlockEntity with id minecraft:chest
[19:26:52] [Server thread/WARN]: Skipping BlockEntity with id minecraft:mob_spawner
[19:26:52] [Server thread/INFO]: Changing view distance to 12, from 10
[19:26:52] [Server thread/INFO]: ImSimplyAlex[local:E:7970bc21] logged in with entity id 68 at (275.27922600373364, 63.0, 51.78119943937726)
[19:26:52] [Server thread/INFO]: ImSimplyAlex joined the game
[19:26:52] [Server thread/WARN]: Skipping BlockEntity with id minecraft:chest
[19:26:52] [Server thread/WARN]: Skipping BlockEntity with id minecraft:chest
[19:26:52] [Server thread/WARN]: Skipping BlockEntity with id minecraft:mob_spawner
[19:26:53] [Server thread/WARN]: Skipping BlockEntity with id minecraft:chest
Loading markers
[OptiFine] (Reflector) Field not present: vR.entityAge
[OptiFine] (Reflector) Method not present: vQ.despawnEntity
[32mCOSMIC >[0m Requesting world border
[32mCOSMIC >[0m Requesting world border
[32mCOSMIC >[0m Requesting world border
[32mCOSMIC >[0m Requesting world border
[32mCOSMIC >[0m Requesting world border
[32mCOSMIC >[0m Requesting world border
[32mCOSMIC >[0m Requesting world border
[32mCOSMIC >[0m Requesting world border
[32mCOSMIC >[0m Requesting world border
[32mCOSMIC >[0m Requesting world border
[32mCOSMIC >[0m Requesting world border
[32mCOSMIC >[0m Requesting world border
[19:27:11] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:music.game
[19:27:12] [Server thread/INFO]: Saving and pausing game...
[19:27:12] [Server thread/INFO]: Saving chunks for level 'Viking Craft'/Overworld
[19:27:12] [Server thread/INFO]: Saving chunks for level 'Viking Craft'/Nether
[19:27:12] [Server thread/INFO]: Saving chunks for level 'Viking Craft'/The End
[19:27:13] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:gui.button.press
[19:27:16] [Client thread/INFO]: Selecting effect minecraft:shaders/post/notch.json
[19:27:17] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:gui.button.press
[19:27:18] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:gui.button.press
[19:27:25] [Server thread/INFO]: Saving and pausing game...
[19:27:25] [Server thread/INFO]: Saving chunks for level 'Viking Craft'/Overworld
[19:27:25] [Server thread/INFO]: Saving chunks for level 'Viking Craft'/Nether
[19:27:25] [Server thread/INFO]: Saving chunks for level 'Viking Craft'/The End
[19:27:27] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:gui.button.press
[19:27:28] [Client thread/INFO]: Selecting effect minecraft:shaders/post/fxaa.json
[19:27:30] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:gui.button.press
[19:27:31] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:gui.button.press
[19:27:39] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:mob.bat.takeoff
[19:27:44] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.wood
[19:27:45] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.wood
[19:27:45] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.gravel
[19:27:45] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.gravel
[19:27:46] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:27:46] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.gravel
[19:27:46] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.gravel
[19:27:47] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:27:47] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:27:48] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:27:49] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.stone
[19:27:49] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:27:50] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:mob.bat.takeoff
[19:27:50] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:mob.bat.takeoff
[19:27:50] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:27:51] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:27:51] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:27:52] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.gravel
[19:27:53] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:27:53] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:27:53] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:mob.bat.takeoff
[19:27:53] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:27:54] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:27:54] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:27:55] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.stone
[19:27:55] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.gravel
[19:27:55] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:mob.bat.takeoff
[19:27:55] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:27:56] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:random.chestopen
[19:27:56] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:random.chestclosed
[19:27:57] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:27:57] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.gravel
[19:27:57] [Server thread/WARN]: Skipping Entity with id minecraft:rabbit
[19:27:57] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:27:58] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:27:58] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:27:58] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:27:59] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:27:59] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:27:59] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:28:00] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:step.grass
[19:28:01] [Server thread/INFO]: Saving and pausing game...
[19:28:01] [Server thread/INFO]: Saving chunks for level 'Viking Craft'/Overworld
[19:28:01] [Server thread/INFO]: Saving chunks for level 'Viking Craft'/Nether
[19:28:01] [Server thread/INFO]: Saving chunks for level 'Viking Craft'/The End
[19:28:02] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:gui.button.press
java.io.IOException: Stream Closed
    at java.io.RandomAccessFile.write0(Native Method)
    at java.io.RandomAccessFile.write(RandomAccessFile.java:489)
    at java.io.RandomAccessFile.writeInt(RandomAccessFile.java:1031)
    at MN.a(Unknown Source)
    at MN.a(Unknown Source)
    at MO.close(Unknown Source)
    at java.util.zip.DeflaterOutputStream.close(DeflaterOutputStream.java:241)
    at java.io.FilterOutputStream.close(FilterOutputStream.java:159)
    at MD.a(Unknown Source)
    at MD.a(Unknown Source)
    at Qs.b(Unknown Source)
    at Qs.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:745)
[19:28:02] [Server thread/INFO]: Stopping server
[19:28:02] [Server thread/INFO]: Saving players
[19:28:02] [Server thread/INFO]: Saving worlds
[19:28:02] [Server thread/INFO]: Saving chunks for level 'Viking Craft'/Overworld
[19:28:02] [Server thread/INFO]: Saving chunks for level 'Viking Craft'/Nether
[19:28:02] [Server thread/INFO]: Saving chunks for level 'Viking Craft'/The End
[19:28:04] [Client thread/WARN]: Unable to play unknown soundEvent: minecraft:gui.button.press
[19:28:04] [Client thread/INFO]: Stopping!

SoundSystem shutting down...
    Author: Paul Lamb, www.paulscode.com

 

 

Edited July 23, 20178 yr by diesieben07
spoiler