Unsupported major.minor version

Discussion in 'Spigot Plugin Help' started by RicoBlaze8, May 19, 2016.

  1. Guys... i have i big problem for 2 plugins:
    Code (Text):
    [21:52:42 INFO]: Set PluginClassLoader as parallel capable
    [21:52:42 ERROR]: Could not load 'plugins/LeakSigns.jar' in folder 'plugins'
    org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: org/signs/skywars/api/Start : Unsupported major.minor version 52.0
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:135) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:329) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugins(CraftServer.java:292) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:198) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:525) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at java.lang.Thread.run(Thread.java:745) [?:1.7.0_79]
    Caused by: java.lang.UnsupportedClassVersionError: org/signs/skywars/api/Start : Unsupported major.minor version 52.0
        at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.7.0_79]
        at java.lang.ClassLoader.defineClass(ClassLoader.java:800) ~[?:1.7.0_79]
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[?:1.7.0_79]
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) ~[?:1.7.0_79]
        at java.net.URLClassLoader.access$100(URLClassLoader.java:71) ~[?:1.7.0_79]
        at java.net.URLClassLoader$1.run(URLClassLoader.java:361) ~[?:1.7.0_79]
        at java.net.URLClassLoader$1.run(URLClassLoader.java:355) ~[?:1.7.0_79]
        at java.security.AccessController.doPrivileged(Native Method) ~[?:1.7.0_79]
        at java.net.URLClassLoader.findClass(URLClassLoader.java:354) ~[?:1.7.0_79]
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:101) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:425) ~[?:1.7.0_79]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:358) ~[?:1.7.0_79]
        at java.lang.Class.forName0(Native Method) ~[?:1.7.0_79]
        at java.lang.Class.forName(Class.java:274) ~[?:1.7.0_79]
        at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:64) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        ... 6 more
    [21:52:42 ERROR]: Could not load 'plugins/LeakSkyWars.jar' in folder 'plugins'
    org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: org/skywars/api/Start : Unsupported major.minor version 52.0
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:135) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:329) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugins(CraftServer.java:292) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:198) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:525) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at java.lang.Thread.run(Thread.java:745) [?:1.7.0_79]
    Caused by: java.lang.UnsupportedClassVersionError: org/skywars/api/Start : Unsupported major.minor version 52.0
        at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.7.0_79]
        at java.lang.ClassLoader.defineClass(ClassLoader.java:800) ~[?:1.7.0_79]
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[?:1.7.0_79]
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) ~[?:1.7.0_79]
        at java.net.URLClassLoader.access$100(URLClassLoader.java:71) ~[?:1.7.0_79]
        at java.net.URLClassLoader$1.run(URLClassLoader.java:361) ~[?:1.7.0_79]
        at java.net.URLClassLoader$1.run(URLClassLoader.java:355) ~[?:1.7.0_79]
        at java.security.AccessController.doPrivileged(Native Method) ~[?:1.7.0_79]
        at java.net.URLClassLoader.findClass(URLClassLoader.java:354) ~[?:1.7.0_79]
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:101) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:425) ~[?:1.7.0_79]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:358) ~[?:1.7.0_79]
        at java.lang.Class.forName0(Native Method) ~[?:1.7.0_79]
        at java.lang.Class.forName(Class.java:274) ~[?:1.7.0_79]
        at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:64) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        ... 6 more
    and
    Code (Text):
    0:50:54 [WARNING] Error enabling plugin BungeeAuthenticator
    java.lang.UnsupportedClassVersionError: pl/edu/tirex/bungeeauthme/AuthPlugin : Unsupported major.minor version 52.0
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:803)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
        at net.md_5.bungee.api.plugin.PluginClassloader.loadClass0(PluginClassloader.java:34)
        at net.md_5.bungee.api.plugin.PluginClassloader.loadClass(PluginClassloader.java:27)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
        at net.md_5.bungee.api.plugin.PluginManager.enablePlugin(PluginManager.java:304)
        at net.md_5.bungee.api.plugin.PluginManager.loadPlugins(PluginManager.java:212)
        at net.md_5.bungee.BungeeCord.start(BungeeCord.java:258)
        at net.md_5.bungee.BungeeCordLauncher.main(BungeeCordLauncher.java:55)
        at net.md_5.bungee.Bootstrap.main(Bootstrap.java:15)
     
  2. Update to Java 8.
     
    • Agree Agree x 1
  3. Or complie the plugins with java 7 instead of java 8
     
  4. How
     
  5. You'll have to update to Java 8
     
  6. But if i update java 7 to 8 the plugins using java 7 works anyway?
     
  7. FormallyMyles

    Supporter

    yes
     
  8. He's not the author, and those plugins might have licenses or be obfuscated.