Please help. This is my log: [10:53:33 ERROR]: Could not load 'plugins\worldguard-bukkit-7.0.2.jar' in folder 'plugins' org.bukkit.plugin.InvalidPluginException: java.lang.NoClassDefFoundError: org/enginehub/piston/exception/CommandException at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:133) ~[spigot.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:327) ~[spigot.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:248) [spigot.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.craftbukkit.v1_12_R1.CraftServer.loadPlugins(CraftServer.java:305) [spigot.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.craftbukkit.v1_12_R1.CraftServer.reload(CraftServer.java:750) [spigot.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.Bukkit.reload(Bukkit.java:525) [spigot.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:27) [spigot.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) [spigot.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:648) [spigot.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchServerCommand(CraftServer.java:634) [spigot.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.DedicatedServer.aP(DedicatedServer.java:444) [spigot.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:407) [spigot.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:679) [spigot.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:577) [spigot.jar:git-Spigot-dcd1643-e60fc34] at java.lang.Thread.run(Unknown Source) [?:1.8.0_241] Caused by: java.lang.NoClassDefFoundError: org/enginehub/piston/exception/CommandException at java.lang.Class.forName0(Native Method) ~[?:1.8.0_241] at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_241] at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:78) ~[spigot.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[spigot.jar:git-Spigot-dcd1643-e60fc34] ... 14 more Caused by: java.lang.ClassNotFoundException: org.enginehub.piston.exception.CommandException at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.8.0_241] at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:152) ~[spigot.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:100) ~[spigot.jar:git-Spigot-dcd1643-e60fc34] at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_241] at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_241] at java.lang.Class.forName0(Native Method) ~[?:1.8.0_241] at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_241] at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:78) ~[spigot.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[spigot.jar:git-Spigot-dcd1643-e60fc34] ... 14 more
Are you using the correct version for your server? ClassNotFound basically means the jar file that you are using doesn't contain that class, basically meaning the dev didn't put it there because there may be miscomplications or something.
1. No. Try to learn Java and understand the stack trace before you even try to reply. 2. This thread is marked as Solved, why are you still posting? 3. This thread is more than 3 months old. Why are you still posting? WHY?
