Ok, mais ce message vient de la console de mcreator.
ps: désolé c'est mon coté admin qui resort
edit: le message plus complet
[10:56:07] [Server thread/ERROR]: Encountered an unexpected exception
>java.lang.IllegalArgumentException: n must be positive
>at java.util.Random.nextInt(Random.java:300) ~[?:1.7.0_60]
>at mcreator_test.generateSurface(mcreator_test.java:133) ~[mcreator_test.class:?]
>at TestEnvironmentMod.generate(TestEnvironmentMod.java:121) ~[TestEnvironmentMod.class:?]
>at cpw.mods.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:106) ~[GameRegistry.class:?]
>at net.minecraft.world.gen.ChunkProviderServer.populate(ChunkProviderServer.java:316) ~[ChunkProviderServer.class:?]
>at net.minecraft.world.chunk.Chunk.populateChunk(Chunk.java:1163) ~[Chunk.class:?]
>at net.minecraft.world.gen.ChunkProviderServer.originalLoadChunk(ChunkProviderServer.java:210) ~[ChunkProviderServer.class:?]
>at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:151) ~[ChunkProviderServer.class:?]
>at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:121) ~[ChunkProviderServer.class:?]
>at net.minecraft.server.MinecraftServer.initialWorldChunkLoad(MinecraftServer.java:315) ~[MinecraftServer.class:?]
>at net.minecraft.server.integrated.IntegratedServer.loadAllWorlds(IntegratedServer.java:79) ~[IntegratedServer.class:?]
>at net.minecraft.server.integrated.IntegratedServer.startServer(IntegratedServer.java:96) ~[IntegratedServer.class:?]
>at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:455) [MinecraftServer.class:?]
>at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:762) [MinecraftServer$2.class:?]
>[10:56:07] [Server thread/ERROR]: This crash report has been saved to: C:\Pylo\MCreator150\forge\eclipse\.\crash-reports\crash-2014-09-01_10.56.07-server.txt
>[10:56:07] [Server thread/INFO] [FML]: Applying holder lookups
>[10:56:07] [Server thread/INFO] [FML]: Holder lookups applied
>[10:56:07] [Server thread/INFO] [FML]: The state engine was in incorrect state SERVER_STARTING and forced into state SERVER_STOPPED. Errors may have been discarded.
>---- Minecraft Crash Report ----
>// Who set us up the TNT?
>Time: 01/09/14 10:56
>Description: Exception in server tick loop
>java.lang.IllegalArgumentException: n must be positive
>at java.util.Random.nextInt(Random.java:300)
>at mcreator_test.generateSurface(mcreator_test.java:133)
>at TestEnvironmentMod.generate(TestEnvironmentMod.java:121)
>at cpw.mods.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:106)
>at net.minecraft.world.gen.ChunkProviderServer.populate(ChunkProviderServer.java:316)
>at net.minecraft.world.chunk.Chunk.populateChunk(Chunk.java:1163)
>at net.minecraft.world.gen.ChunkProviderServer.originalLoadChunk(ChunkProviderServer.java:210)
>at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:151)
>at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:121)
>at net.minecraft.server.MinecraftServer.initialWorldChunkLoad(MinecraftServer.java:315)
>at net.minecraft.server.integrated.IntegratedServer.loadAllWorlds(IntegratedServer.java:79)
>at net.minecraft.server.integrated.IntegratedServer.startServer(IntegratedServer.java:96)
>at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:455)
>at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:762)
>A detailed walkthrough of the error, its code path and all known details is as follows:
>---------------------------------------------------------------------------------------
>-- System Details --
>Details:
>Minecraft Version: 1.7.10
>Operating System: Windows 7 (x86) version 6.1
>Java Version: 1.7.0_60, Oracle Corporation
>Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
>Memory: 42111856 bytes (40 MB) / 133685248 bytes (127 MB) up to 259522560 bytes (247 MB)
>JVM Flags: 0 total;
>AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
>IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
>FML: MCP v9.05 FML v7.10.18.1180 Minecraft Forge 10.13.0.1180 4 mods loaded, 4 mods active
>mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
>FML{7.10.18.1180} [Forge Mod Loader] (forgeSrc-1.7.10-10.13.0.1180.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
>Forge{10.13.0.1180} [Minecraft Forge] (forgeSrc-1.7.10-10.13.0.1180.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
>TestEnvironmentMod{1.0} [TestEnvironmentMod] (modid-1.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
>Profiler Position: N/A (disabled)
>Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
>Player Count: 0 / 8; []
>Type: Integrated Server (map_client.txt)
>Is Modded: Definitely; Client brand changed to 'fml,forge'
>#@!@# Game crashed! Crash report saved to: #@!@# .\crash-reports\crash-2014-09-01_10.56.07-server.txt
>AL lib: (EE) alc_cleanup: 1 device not closed
>:runClient FAILED
>FAILURE: Build failed with an exception.
>* What went wrong:
>Execution failed for task ':runClient'.
>> Process 'command 'C:\Pylo\MCreator150\jdk\bin\java.exe'' finished with non-zero exit value -1
>* Try:
>BUILD FAILED
>Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
>Total time: 1 mins 48.633 secs
>C:\Pylo\MCreator150\forge>
>Task completed with return code 0 in 109652 milliseconds