Salut,
je viens d'installer forge pour 1.8.8 et le ReplayMod v1.0.7. Ensuite j'ai mis le .jar du replaymod dans le fichier mod de mon dossier .minecraft mais quand je lance mon jeu, je met bien mon profil sur forge, mais lors du chargement de forge, je crash avec ce crash report:
---- Minecraft Crash Report ----

WARNING: coremods are present:
Contact their authors BEFORE contacting forge

// My bad.

Time: 05/04/16 11:44
Description: Initializing game

java.lang.NoClassDefFoundError: net/minecraft/client/renderer/entity/RenderPlayer
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:481)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:329)
at net.minecraft.client.main.Main.main(SourceFile:124)
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:483)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.renderer.entity.RenderPlayer
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 9 more
Caused by: java.lang.NoClassDefFoundError: net/minecraft/client/renderer/entity/RendererLivingEntity
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
... 11 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.renderer.entity.RendererLivingEntity
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 15 more
Caused by: org.spongepowered.asm.mixin.MixinApplyError: Mixin [mixins.replaymod.json:MixinRendererLivingEntity] from phase [DEFAULT] in config [mixins.replaymod.json] FAILED
at org.spongepowered.asm.mixin.transformer.MixinTransformer.handleMixinErrorState(MixinTransformer.java:634)
at org.spongepowered.asm.mixin.transformer.MixinTransformer.transform(MixinTransformer.java:408)
at org.spongepowered.asm.mixin.transformer.MixinTransformer$Proxy.transform(MixinTransformer.java:104)
at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279)
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176)
... 17 more
Caused by: org.spongepowered.asm.mixin.injection.InvalidInjectionException: @Inject annotation on areAllNamesHidden could not find 'func_110813_b'
at org.spongepowered.asm.mixin.injection.struct.InjectionInfo.readAnnotation(InjectionInfo.java:152)
at org.spongepowered.asm.mixin.injection.struct.InjectionInfo.<init>(InjectionInfo.java:112)
at org.spongepowered.asm.mixin.injection.struct.CallbackInjectionInfo.<init>(CallbackInjectionInfo.java:38)
at org.spongepowered.asm.mixin.injection.struct.InjectionInfo.parse(InjectionInfo.java:298)
at org.spongepowered.asm.mixin.transformer.MixinApplicator.applyInjections(MixinApplicator.java:675)
at org.spongepowered.asm.mixin.transformer.MixinApplicator.applyMixin(MixinApplicator.java:200)
at org.spongepowered.asm.mixin.transformer.MixinApplicator.apply(MixinApplicator.java:181)
at org.spongepowered.asm.mixin.transformer.MixinTransformer.apply(MixinTransformer.java:594)
at org.spongepowered.asm.mixin.transformer.MixinTransformer.applyMixins(MixinTransformer.java:566)
at org.spongepowered.asm.mixin.transformer.MixinTransformer.transform(MixinTransformer.java:402)
... 20 more

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
Suite du crash report en commentaire

-- Head --
Stacktrace:
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:481)

-- Initialization --
Details:
Stacktrace:
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:329)
at net.minecraft.client.main.Main.main(SourceFile:124)
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:483)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
Minecraft Version: 1.8.8
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 136992784 bytes (130 MB) / 290181120 bytes (276 MB) up to 1060372480 bytes (1011 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP 9.18 Powered by Forge 11.15.0.1655 3 mods loaded, 3 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCH mcp{9.18} [Minecraft Coder Pack] (minecraft.jar)
UCH FML{8.0.99.99} [Forge Mod Loader] (forge-1.8.8-11.15.0.1655.jar)
UCH Forge{11.15.0.1655} [Minecraft Forge] (forge-1.8.8-11.15.0.1655.jar)
Loaded coremods (and transformers):
GL info: ' Vendor: 'Intel' Version: '4.3.0 - Build 10.18.15.4268' Renderer: 'Intel(R) HD Graphics 4400'
Launched Version: 1.8.8-forge1.8.8-11.15.0.1655
LWJGL: 2.9.4
OpenGL: Intel(R) HD Graphics 4400 GL version 4.3.0 - Build 10.18.15.4268, Intel
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

Using VBOs: No
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: faithful32pack.zip, Frites_Belges.zip
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 4x Intel(R) Core(TM) i5-4210U CPU @ 1.70GHz

Dans mes JVM Arguments j'ai essayé de changer en -Xmx2G mais ça ne marche toujours pas

Je crois que ce mod est fait pour la version 1.8 et non la version 1.8.8.

Oui, je pense que c'est effectivement ça, c’était un peux évident d’ailleurs...

Avec les mods, il vaut mieux utiliser des version genre 1.7.10 ou 1.8 mais pas des 1.8.X ^^