We recently banned a player that griefed extensively and when we did the rollback command it did nothing. Just started 0 actions were rollback but the changes were visible with the datalog tool and through the web interface. I also tried placing blocks and then rolling back my actions but that did not work either. eg command used. /dl rollback p:"playername" r:50

I checked the server console and logs and it is not throwing any errors when the rollback command is used. Any assistance in this issue would be greatly appreciated.

This is a known bug in the recent version - try supplying a radius in the command, not just the players name.

I did get it to say it rolledback some burn damage with /dl rollback p:Environment r:50 a:block-burn but nothing ever changed around me.

Java Error that appeared.

2011-07-26 09:48:46 [SEVERE] Exception in thread "Thread-4333"
2011-07-26 09:48:46 [SEVERE] java.lang.NullPointerException
2011-07-26 09:48:46 [SEVERE] at net.minecraft.server.World.a(World.java:1647)
2011-07-26 09:48:46 [SEVERE] at net.minecraft.server.World.a(World.java:1615)
2011-07-26 09:48:46 [SEVERE] at net.minecraft.server.World.a(World.java:578)
2011-07-26 09:48:46 [SEVERE] at net.minecraft.server.MetadataChunkBlock.a(SourceFile:104)
2011-07-26 09:48:46 [SEVERE] at net.minecraft.server.World.doLighting(World.java:1602)
2011-07-26 09:48:46 [SEVERE] at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:443)
2011-07-26 09:48:46 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:361)
2011-07-26 09:48:46 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)
2011-07-26 09:48:46 [SEVERE] Unexpected exception
java.lang.NullPointerException
at net.minecraft.server.World.a(World.java:1647)
at net.minecraft.server.World.a(World.java:1615)
at net.minecraft.server.World.a(World.java:578)
at net.minecraft.server.MetadataChunkBlock.a(SourceFile:104)
at net.minecraft.server.World.doLighting(World.java:1602)
at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:443)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:361)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)
2011-07-26 09:48:46 [SEVERE] java.lang.NullPointerException
2011-07-26 09:48:46 [SEVERE] at net.minecraft.server.World.a(World.java:1647)
2011-07-26 09:48:46 [SEVERE] at net.minecraft.server.World.a(World.java:1615)
2011-07-26 09:48:46 [SEVERE] at net.minecraft.server.Chunk.g(Chunk.java:221)
2011-07-26 09:48:46 [SEVERE] at net.minecraft.server.Chunk.a(Chunk.java:292)
2011-07-26 09:48:46 [SEVERE] at net.minecraft.server.World.setRawTypeId(World.java:307)
2011-07-26 09:48:46 [SEVERE] at net.minecraft.server.World.setTypeId(World.java:372)
2011-07-26 09:48:46 [SEVERE] at org.bukkit.craftbukkit.block.CraftBlock.setTypeId(CraftBlock.java:77)
2011-07-26 09:48:46 [SEVERE] at uk.co.oliwali.DataLog.util.BlockUtil.setBlockString(BlockUtil.java:49)
2011-07-26 09:48:46 [SEVERE] at uk.co.oliwali.DataLog.Rollback.run(Rollback.java:72)
2011-07-26 09:48:46 [SEVERE] at java.lang.Thread.run(Unknown Source)

This is fixed