diff --git a/src/net/milkbowl/vault/Vault.java b/src/net/milkbowl/vault/Vault.java
index f085f0e5..77bef129 100644
--- a/src/net/milkbowl/vault/Vault.java
+++ b/src/net/milkbowl/vault/Vault.java
@@ -359,7 +359,7 @@ private void convertCommand(CommandSender sender, String[] args) {
                 
             }
         }
-        sender.sendMessage("Converson complete, please verify the data before using it.");
+        sender.sendMessage("Conversion complete, please verify the data before using it.");
     }
 
     private void infoCommand(CommandSender sender) {
@@ -480,7 +480,12 @@ public String call() {
         }));
 
         // Create our Permission Graph and Add our permission Plotters
-        final String permName = Bukkit.getServer().getServicesManager().getRegistration(Permission.class).getProvider().getName();
+        RegisteredServiceProvider<Permission> rspPerm = Bukkit.getServer().getServicesManager().getRegistration(Permission.class);
+        Permission perm = null;
+        if (rspPerm != null) {
+            perm = rspPerm.getProvider();
+        }
+        final String permName = perm != null ? perm.getName() : "No Permission";
         metrics.addCustomChart(new SimplePie("permission", new Callable<String>() {
             @Override
             public String call() {
diff --git a/src/net/milkbowl/vault/chat/plugins/Chat_OverPermissions.java b/src/net/milkbowl/vault/chat/plugins/Chat_OverPermissions.java
index b3e572aa..b257b2f1 100644
--- a/src/net/milkbowl/vault/chat/plugins/Chat_OverPermissions.java
+++ b/src/net/milkbowl/vault/chat/plugins/Chat_OverPermissions.java
@@ -98,7 +98,7 @@ public String getGroupSuffix(String world, String group) {
 
     @Override
     public void setGroupSuffix(String world, String group, String suffix) {
-        setGroupInfoString(world, group, "prefix", suffix);
+        setGroupInfoString(world, group, "suffix", suffix);
     }
 
     @Override
diff --git a/src/net/milkbowl/vault/chat/plugins/Chat_PermissionsEx.java b/src/net/milkbowl/vault/chat/plugins/Chat_PermissionsEx.java
index faac2fe1..560eaa55 100644
--- a/src/net/milkbowl/vault/chat/plugins/Chat_PermissionsEx.java
+++ b/src/net/milkbowl/vault/chat/plugins/Chat_PermissionsEx.java
@@ -359,7 +359,7 @@ public void setPlayerPrefix(String world, String player, String prefix) {
     @Override
     public String getGroupPrefix(String world, String group) {
         PermissionGroup pGroup = PermissionsEx.getPermissionManager().getGroup(group);
-        if (group != null) {
+        if (pGroup != null) {
             return pGroup.getPrefix(world);
         } else {
             return null;
@@ -369,7 +369,7 @@ public String getGroupPrefix(String world, String group) {
     @Override
     public void setGroupPrefix(String world, String group, String prefix) {
         PermissionGroup pGroup = PermissionsEx.getPermissionManager().getGroup(group);
-        if (group != null) {
+        if (pGroup != null) {
             pGroup.setPrefix(prefix, world);
         }
 
@@ -378,7 +378,7 @@ public void setGroupPrefix(String world, String group, String prefix) {
     @Override
     public String getGroupSuffix(String world, String group) {
         PermissionGroup pGroup = PermissionsEx.getPermissionManager().getGroup(group);
-        if (group != null) {
+        if (pGroup != null) {
             return pGroup.getSuffix(world);
         } else {
             return null;
@@ -388,7 +388,7 @@ public String getGroupSuffix(String world, String group) {
     @Override
     public void setGroupSuffix(String world, String group, String suffix) {
         PermissionGroup pGroup = PermissionsEx.getPermissionManager().getGroup(group);
-        if (group != null) {
+        if (pGroup != null) {
             pGroup.setSuffix(suffix, world);
         }
     }