iProfession problems

org.bukkit.plugin.AuthorNagException
	at org.bukkit.plugin.java.JavaPluginLoader.createRegisteredListeners(JavaPluginLoader.java:302)
	at org.bukkit.plugin.SimplePluginManager.registerEvents(SimplePluginManager.java:507)
	at com.earth2me.essentials.chat.EssentialsChat.onEnable(EssentialsChat.java:44)
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:357)
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
	at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:263)
	at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:245)
	at org.bukkit.craftbukkit.CraftServer.reload(CraftServer.java:564)
	at org.bukkit.Bukkit.reload(Bukkit.java:182)
	at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:21)
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:168)
	at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:490)
	at org.bukkit.craftbukkit.CraftServer.dispatchServerCommand(CraftServer.java:486)
	at net.minecraft.server.DedicatedServer.ah(DedicatedServer.java:248)
	at net.minecraft.server.DedicatedServer.q(DedicatedServer.java:213)
	at net.minecraft.server.MinecraftServer.p(MinecraftServer.java:476)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:408)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)
22:02:19 [INFO] [iProfessions] Enabling iProfessions v2.0
22:02:19 [SEVERE] Cannot load plugins/iProfessions/config.yml
org.bukkit.configuration.InvalidConfigurationException: while parsing a block collection
 in "<string>", line 27, column 7:
          - category: blockdestroy
          ^
expected <block end>, but found Key
 in "<string>", line 31, column 7:
          skills:
          ^

	at org.bukkit.configuration.file.YamlConfiguration.loadFromString(YamlConfiguration.java:55)
	at org.bukkit.configuration.file.FileConfiguration.load(FileConfiguration.java:138)
	at org.bukkit.configuration.file.FileConfiguration.load(FileConfiguration.java:105)
	at org.bukkit.configuration.file.YamlConfiguration.loadConfiguration(YamlConfiguration.java:175)
	at org.bukkit.plugin.java.JavaPlugin.reloadConfig(JavaPlugin.java:117)
	at org.bukkit.plugin.java.JavaPlugin.getConfig(JavaPlugin.java:111)
	at com.ptibiscuit.iprofession.data.YamlData.loadProfessions(YamlData.java:26)
	at com.ptibiscuit.iprofession.Plugin.onEnable(Plugin.java:53)
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:357)
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
	at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:263)
	at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:245)
	at org.bukkit.craftbukkit.CraftServer.reload(CraftServer.java:564)
	at org.bukkit.Bukkit.reload(Bukkit.java:182)
	at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:21)
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:168)
	at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:490)
	at org.bukkit.craftbukkit.CraftServer.dispatchServerCommand(CraftServer.java:486)
	at net.minecraft.server.DedicatedServer.ah(DedicatedServer.java:248)
	at net.minecraft.server.DedicatedServer.q(DedicatedServer.java:213)
	at net.minecraft.server.MinecraftServer.p(MinecraftServer.java:476)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:408)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)
Caused by: while parsing a block collection
 in "<string>", line 27, column 7:
          - category: blockdestroy
          ^
expected <block end>, but found Key
 in "<string>", line 31, column 7:
          skills:
          ^

	at org.yaml.snakeyaml.parser.ParserImpl$ParseBlockSequenceEntry.produce(ParserImpl.java:519)
	at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:161)
	at org.yaml.snakeyaml.parser.ParserImpl.checkEvent(ParserImpl.java:146)
	at org.yaml.snakeyaml.composer.Composer.composeSequenceNode(Composer.java:203)
	at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:158)
	at org.yaml.snakeyaml.composer.Composer.composeMappingNode(Composer.java:237)
	at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:160)
	at org.yaml.snakeyaml.composer.Composer.composeMappingNode(Composer.java:237)
	at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:160)
	at org.yaml.snakeyaml.composer.Composer.composeMappingNode(Composer.java:237)
	at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:160)
	at org.yaml.snakeyaml.composer.Composer.composeDocument(Composer.java:123)
	at org.yaml.snakeyaml.composer.Composer.getSingleNode(Composer.java:106)
	at org.yaml.snakeyaml.constructor.BaseConstructor.getSingleData(BaseConstructor.java:121)
	at org.yaml.snakeyaml.Yaml.loadFromReader(Yaml.java:480)
	at org.yaml.snakeyaml.Yaml.load(Yaml.java:399)
	at org.bukkit.configuration.file.YamlConfiguration.loadFromString(YamlConfiguration.java:53)
	... 23 more
22:02:19 [INFO] ---------------------------------------------------
22:02:19 [INFO] | iProfessions by Ptibiscuit                      |
22:02:19 [INFO] | 0 professions loaded !                          |
22:02:19 [INFO] | Stats not detected.                             |
22:02:19 [INFO] | Economy detected, you can use the price field ! |
22:02:19 [INFO] ---------------------------------------------------