diff --git a/EssentialsGroupManager/src/Changelog.txt b/EssentialsGroupManager/src/Changelog.txt
index 42b7b989c..f699c3f6f 100644
--- a/EssentialsGroupManager/src/Changelog.txt
+++ b/EssentialsGroupManager/src/Changelog.txt
@@ -166,4 +166,5 @@ v 2.0:
 	- Fix an error I caused trying to modify an unmodifiable list when parsing '*' permissions.
 	- Don't throw errors when attempting to remove permission attachments (bukkit will have already removed it).
 	- Remove all permission attachments when performing a manload or restart.
-	- Expand 'manwhois' to also list a users subgroups.
\ No newline at end of file
+	- Expand 'manwhois' to also list a users subgroups.
+	- Fix a concurrent modification error when removing all attachments.
\ No newline at end of file
diff --git a/EssentialsGroupManager/src/org/anjocaido/groupmanager/permissions/BukkitPermissions.java b/EssentialsGroupManager/src/org/anjocaido/groupmanager/permissions/BukkitPermissions.java
index 3b66c1eb9..51f019efc 100644
--- a/EssentialsGroupManager/src/org/anjocaido/groupmanager/permissions/BukkitPermissions.java
+++ b/EssentialsGroupManager/src/org/anjocaido/groupmanager/permissions/BukkitPermissions.java
@@ -20,6 +20,7 @@ import java.lang.reflect.Field;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.Iterator;
 import java.util.LinkedHashMap;
 import java.util.LinkedList;
 import java.util.List;
@@ -368,8 +369,11 @@ public class BukkitPermissions {
 	 */
 	public void removeAllAttachments() {
 		
-		for (Player player : attachments.keySet())
-			removeAttachment(player);
+		Iterator<Player> itr = attachments.keySet().iterator();
+		
+		while (itr.hasNext()){
+			removeAttachment(itr.next());
+		}
 	}
 
 	/**