Crash error

[15:49:41] [Server thread/ERROR]: Error occurred while enabling DynmapPlotMe v0.3 (Is it up to date?)
java.lang.NoClassDefFoundError: com/worldcretornica/plotme/PlotMe
	at com.worldcretornica.dynmapplotme.DynmapPlotMe.onEnable(DynmapPlotMe.java:267) ~[?:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321) ~[spigot.jar:git-Spigot-44c59bf-1880a9c]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:340) [spigot.jar:git-Spigot-44c59bf-1880a9c]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [spigot.jar:git-Spigot-44c59bf-1880a9c]
	at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugin(CraftServer.java:356) [spigot.jar:git-Spigot-44c59bf-1880a9c]
	at org.bukkit.craftbukkit.v1_8_R3.CraftServer.enablePlugins(CraftServer.java:316) [spigot.jar:git-Spigot-44c59bf-1880a9c]
	at net.minecraft.server.v1_8_R3.MinecraftServer.s(MinecraftServer.java:418) [spigot.jar:git-Spigot-44c59bf-1880a9c]
	at net.minecraft.server.v1_8_R3.MinecraftServer.k(MinecraftServer.java:382) [spigot.jar:git-Spigot-44c59bf-1880a9c]
	at net.minecraft.server.v1_8_R3.MinecraftServer.a(MinecraftServer.java:337) [spigot.jar:git-Spigot-44c59bf-1880a9c]
	at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:256) [spigot.jar:git-Spigot-44c59bf-1880a9c]
	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:528) [spigot.jar:git-Spigot-44c59bf-1880a9c]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_45]
Caused by: java.lang.ClassNotFoundException: com.worldcretornica.plotme.PlotMe
	at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.8.0_45]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:101) ~[spigot.jar:git-Spigot-44c59bf-1880a9c]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86) ~[spigot.jar:git-Spigot-44c59bf-1880a9c]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_45]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_45]
	... 12 more

another error
[14:57:18] [Server thread/WARN]: [DynmapPlotMe] Task #45 for DynmapPlotMe v0.3 generated an exception
java.lang.NoSuchMethodError: com.worldcretornica.plotme_core.PlotMapInfo.getLoadedPlots()Ljava/util/concurrent/ConcurrentHashMap;
        at com.worldcretornica.dynmapplotme.DynmapPlotMe.updatePlots(DynmapPlotMe.java:190) ~[?:?]
        at com.worldcretornica.dynmapplotme.DynmapPlotMe.access$300(DynmapPlotMe.java:27) ~[?:?]
        at com.worldcretornica.dynmapplotme.DynmapPlotMe$PlotMeUpdate.run(DynmapPlotMe.java:355) ~[?:?]
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:71) ~[spigot.jar:git-Spigot-44c59bf-1880a9c]
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:350) [spigot.jar:git-Spigot-44c59bf-1880a9c]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:726) [spigot.jar:git-Spigot-44c59bf-1880a9c]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:367) [spigot.jar:git-Spigot-44c59bf-1880a9c]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:657) [spigot.jar:git-Spigot-44c59bf-1880a9c]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:560) [spigot.jar:git-Spigot-44c59bf-1880a9c]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_45]