Startup with Towny and without WorldGuard

[17:01:16] [Server thread/INFO]: Starting minecraft server version 1.8
[17:01:16] [Server thread/INFO]: Loading properties
[17:01:16] [Server thread/INFO]: Default game type: SURVIVAL
[17:01:17] [Server thread/INFO]: This server is running CraftBukkit version git-Spigot-da32fe1-2ba7357 (MC: 1.8) (Implementing API version 1.8-R0.1-SNAPSHOT)
[17:01:17] [Server thread/INFO]: Debug logging is disabled
[17:01:17] [Server thread/INFO]: Server Ping Player Sample Count: 12
[17:01:17] [Server thread/INFO]: Using 4 threads for Netty based IO
[17:01:17] [Server thread/INFO]: Generating keypair
[17:01:18] [Server thread/INFO]: Starting Minecraft server on 192.168.1.222:25565
[17:01:19] [Server thread/INFO]: Set PluginClassLoader as parallel capable
[17:01:20] [Server thread/ERROR]: Could not load 'plugins\MysteryCrates.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.NoClassDefFoundError: com/sk89q/worldguard/protection/flags/Flag
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:135) ~[spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-da32fe1-2ba7357]
	at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:329) ~[spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-da32fe1-2ba7357]
	at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-da32fe1-2ba7357]
	at org.bukkit.craftbukkit.v1_8_R1.CraftServer.loadPlugins(CraftServer.java:288) [spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-da32fe1-2ba7357]
	at net.minecraft.server.v1_8_R1.DedicatedServer.init(DedicatedServer.java:152) [spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-da32fe1-2ba7357]
	at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:494) [spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-da32fe1-2ba7357]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_25]
Caused by: java.lang.NoClassDefFoundError: com/sk89q/worldguard/protection/flags/Flag
	at java.lang.Class.forName0(Native Method) ~[?:1.8.0_25]
	at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_25]
	at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:64) ~[spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-da32fe1-2ba7357]
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-da32fe1-2ba7357]
	... 6 more
Caused by: java.lang.ClassNotFoundException: com.sk89q.worldguard.protection.flags.Flag
	at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.8.0_25]
	at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.8.0_25]
	at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_25]
	at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.8.0_25]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:101) ~[spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-da32fe1-2ba7357]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86) ~[spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-da32fe1-2ba7357]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_25]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_25]
	at java.lang.Class.forName0(Native Method) ~[?:1.8.0_25]
	at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_25]
	at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:64) ~[spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-da32fe1-2ba7357]
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[spigot-1.8-R0.1-SNAPSHOT.jar:git-Spigot-da32fe1-2ba7357]
	... 6 more