LibelulaProtectionBlocks error

13:08:24 [INFO] [Libelula PB] World "SkyGrid_nether" loaded.
13:08:24 [INFO] [Libelula PB] World "SkyGrid" loaded.
13:08:24 [INFO] [Vault] No new version available
13:08:25 [INFO] [MinecraftMarket] &0
13:08:25 [INFO] [ProtectionStones] Disabling ProtectionStones v1.9j
13:08:25 [INFO] [ProtectionStones] Saving SkyGrid
13:08:25 [INFO] [ProtectionStones] Saving SkyGrid_nether
13:08:25 [INFO] [ProtectionStones] Disabled
13:08:25 [INFO] [Libelula PB] Default config.yml saved.
13:08:25 [INFO] [Libelula PB] Importing from ProtectionStones for world: SkyGrid_nether
13:08:25 [INFO] [Libelula PB] Old fashioned plugin ProtectionBlock found and disabled.
13:08:25 [INFO] [Libelula PB] Vault plugin successfully hooked.
13:08:25 [INFO] [Libelula PB] Shop functionality enabled.
13:08:25 [WARN] Exception in thread "Craft Scheduler Thread - 2"
13:08:25 [WARN] org.apache.commons.lang.UnhandledException: Plugin LibelulaProtectionBlocks v2.0.10 Release generated an exception while executing task 106
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:56)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
        at me.libelula.pb.ProtectionStonesImporter$1.run(ProtectionStonesImporter.java:130)
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:71)
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53)
        ... 3 more