Jervys

You need upload on the server the 1.5.2 librery, beacause forge (i think) don't support 1.5.2 version,too. Or stop using 1.5.2 and start using the last version or the 1.6.2 If you have an old 1.5.2 client, inside the minecraft folder you can found the forge lib!

Hi forgers! I have open a server with forge 1.5.2 server with this mod: Additional-BuildCraft CodeChickenCore NEI FurnitureMod appeng bcTools BiblioCraft Biomes-o-Plenty buildcraft Chisel-Mod CodeChickenCore CoFHCore ComputerCraft CustomMobSpawner DartCraft Durability Factorization GraveStone Inventory-Tweks Metallurgy mFC miscperipherals mystcraft Natura OmniTools Primitive-Mobs Railcraft SimplyHorses TConstruct ThermalExpansion Vending-Block All mods are at the last version and in my old server, an VPS with 8G of RAM, the server doing (not perfectly but doing); Now i'm transfert my server from the VPS to a Dedicated and, when i'm going to startup the server, it crash and report this: ---- Minecraft Crash Report ---- // Ooh. Shiny. Time: 10/23/13 3:45 PM Description: Exception in server tick loop java.lang.NoClassDefFoundError: net/minecraft/client/gui/GuiScreen at mod_ReiMinimap.getVersion(mod_ReiMinimap.java:16) at cpw.mods.fml.common.modloader.ModLoaderModContainer.getVersion(ModLoaderModContainer.java:417) at cpw.mods.fml.common.Loader.loadMods(Loader.java:508) at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:85) at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:350) at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:69) at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:431) at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573) Caused by: java.lang.ClassNotFoundException: net.minecraft.client.gui.GuiScreen at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:238) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 8 more Caused by: java.lang.NullPointerException at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:227) ... 10 more A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- System Details -- Details: Minecraft Version: 1.5.2 Operating System: Linux (amd64) version 3.2.0-4-amd64 Java Version: 1.7.0_40, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 3424033464 bytes (3265 MB) / 4089446400 bytes (3900 MB) up to 4089446400 bytes (3900 MB) JVM Flags: 2 total; -Xmx4096m -Xms4069m AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used Suspicious classes: FML and Forge are installed IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0 FML: ~~ERROR~~ NoClassDefFoundError: net/minecraft/client/gui/GuiScreen Profiler Position: N/A (disabled) Is Modded: Definitely; Server brand changed to 'fml,forge' Type: Dedicated Server (map_server.txt) You know how the problem is? There's a solution?