diff --git a/Plan/src/main/java/com/djrapitops/plan/Phrase.java b/Plan/src/main/java/com/djrapitops/plan/Phrase.java
index 1406fba2c..f6194d500 100644
--- a/Plan/src/main/java/com/djrapitops/plan/Phrase.java
+++ b/Plan/src/main/java/com/djrapitops/plan/Phrase.java
@@ -179,7 +179,7 @@ public enum Phrase {
     public String parse(String... p) {
         String returnValue = this.toString();
         for (int i = 0; i < p.length; i++) {
-            returnValue = returnValue.replaceAll("REPLACE" + i, p[i]);
+            returnValue = returnValue.replace("REPLACE" + i, p[i]);
         }
         return returnValue;
     }
diff --git a/Plan/src/main/java/com/djrapitops/plan/data/UserData.java b/Plan/src/main/java/com/djrapitops/plan/data/UserData.java
index d5f98866b..4bd1fb7bd 100644
--- a/Plan/src/main/java/com/djrapitops/plan/data/UserData.java
+++ b/Plan/src/main/java/com/djrapitops/plan/data/UserData.java
@@ -81,7 +81,7 @@ public class UserData {
             isBanned = player.isBanned();
         } catch (Exception e) {
             Plan plugin = getPlugin(Plan.class);
-            plugin.logError("Error getting ban date from Bukkit files. "+uuid.toString());
+            plugin.logError("Error getting ban date from Bukkit files. " + uuid.toString());
             plugin.toLog(this.getClass().getName(), e);
         }
         name = player.getName();
@@ -118,7 +118,7 @@ public class UserData {
             isBanned = player.isBanned();
         } catch (Exception e) {
             Plan plugin = getPlugin(Plan.class);
-            plugin.logError("Error getting ban date from Bukkit files. "+uuid.toString());
+            plugin.logError("Error getting ban date from Bukkit files. " + uuid.toString());
             plugin.toLog(this.getClass().getName(), e);
         }
         name = player.getName();
@@ -130,6 +130,7 @@ public class UserData {
 
     /**
      * Creates a new UserData object with copied values.
+     *
      * @param data UserData to copy into the new object.
      */
     public UserData(UserData data) {
@@ -164,7 +165,7 @@ public class UserData {
         this.sessions = new ArrayList<>();
         sessions.addAll(data.getSessions());
     }
-    
+
     /**
      *
      * @param ip
@@ -210,9 +211,11 @@ public class UserData {
      */
     public boolean addNickname(String nick) {
         if (!nicknames.contains(nick)) {
-            if (!nick.isEmpty()) {
-                nicknames.add(nick);
-                return true;
+            if (nick != null) {
+                if (!nick.isEmpty()) {
+                    nicknames.add(nick);
+                    return true;
+                }
             }
         }
         return false;
@@ -304,7 +307,7 @@ public class UserData {
     public void access() {
         accessing++;
     }
-    
+
     /**
      *
      */
@@ -313,12 +316,10 @@ public class UserData {
     }
 
     // Getters -------------------------------------------------------------
-
     /**
      *
      * @return
      */
-
     public UUID getUuid() {
         return uuid;
     }
@@ -452,7 +453,6 @@ public class UserData {
     }
 
     // Setters -------------------------------------------------------------
-
     /**
      *
      * @param uuid
@@ -620,7 +620,7 @@ public class UserData {
     public void setPlayerKills(List<KillData> playerKills) {
         this.playerKills = playerKills;
     }
-    
+
     /**
      *
      * @param kill
@@ -734,6 +734,5 @@ public class UserData {
         }
         return true;
     }
-    
-    
+
 }
diff --git a/Plan/src/main/java/com/djrapitops/plan/database/Database.java b/Plan/src/main/java/com/djrapitops/plan/database/Database.java
index 43c891499..ca1173063 100644
--- a/Plan/src/main/java/com/djrapitops/plan/database/Database.java
+++ b/Plan/src/main/java/com/djrapitops/plan/database/Database.java
@@ -5,6 +5,8 @@ import java.util.*;
 import main.java.com.djrapitops.plan.Plan;
 import main.java.com.djrapitops.plan.data.UserData;
 import main.java.com.djrapitops.plan.data.cache.DBCallableProcessor;
+import org.bukkit.Location;
+import org.bukkit.World;
 import org.bukkit.configuration.ConfigurationSection;
 
 /**
@@ -164,4 +166,5 @@ public abstract class Database {
      * @throws SQLException
      */
     public abstract int getUserId(String uuid) throws SQLException;
+    public abstract List<Location> getLocations(String userId, HashMap<String, World> worlds) throws SQLException;
 }
diff --git a/Plan/src/main/java/com/djrapitops/plan/database/databases/SQLDB.java b/Plan/src/main/java/com/djrapitops/plan/database/databases/SQLDB.java
index 9e803e63b..86f5ad99c 100644
--- a/Plan/src/main/java/com/djrapitops/plan/database/databases/SQLDB.java
+++ b/Plan/src/main/java/com/djrapitops/plan/database/databases/SQLDB.java
@@ -714,7 +714,8 @@ public abstract class SQLDB extends Database {
         return nicknames;
     }
 
-    private List<Location> getLocations(String userId, HashMap<String, World> worlds) throws SQLException {
+    @Override
+    public List<Location> getLocations(String userId, HashMap<String, World> worlds) throws SQLException {
         PreparedStatement statement;
         ResultSet set;
         statement = connection.prepareStatement("SELECT * FROM " + locationName + " WHERE UPPER(" + locationColumnUserID + ") LIKE UPPER(?)");
@@ -965,11 +966,11 @@ public abstract class SQLDB extends Database {
      * @throws SQLException
      */
     public void saveAdditionalLocationsList(int userId, List<Location> locations) throws SQLException {
-        List<Location> newLocations = new ArrayList<>();
-        newLocations.addAll(locations);
-        if (newLocations.isEmpty()) {
+        if (locations == null || locations.isEmpty()) {
             return;
         }
+        List<Location> newLocations = new ArrayList<>();
+        newLocations.addAll(locations);        
         PreparedStatement saveStatement = connection.prepareStatement("INSERT INTO " + locationName + " ("
                 + locationColumnUserID + ", "
                 + locationColumnCoordinatesX + ", "
@@ -979,6 +980,9 @@ public abstract class SQLDB extends Database {
         boolean commitRequired = false;
         if (!newLocations.isEmpty()) {
             for (Location location : newLocations) {
+                if (location == null) {
+                    continue;
+                }
                 saveStatement.setInt(1, userId);
                 saveStatement.setInt(2, (int) location.getBlockX());
                 saveStatement.setInt(3, (int) location.getBlockZ());
@@ -1006,7 +1010,7 @@ public abstract class SQLDB extends Database {
      * @throws SQLException
      */
     public void saveNickList(int userId, HashSet<String> names, String lastNick) throws SQLException {
-        if (names.isEmpty()) {
+        if (names == null || names.isEmpty()) {
             return;
         }
         PreparedStatement statement = connection.prepareStatement(
@@ -1056,9 +1060,14 @@ public abstract class SQLDB extends Database {
                 + ") VALUES (?, ?, ?)");
         boolean commitRequired = false;
         for (SessionData session : sessions) {
+            long end = session.getSessionEnd();
+            long start = session.getSessionStart();
+            if (end < start) {
+                continue;
+            }
             statement.setInt(1, userId);
-            statement.setLong(2, session.getSessionStart());
-            statement.setLong(3, session.getSessionEnd());
+            statement.setLong(2, start);
+            statement.setLong(3, end);
             statement.addBatch();
             commitRequired = true;
         }
@@ -1076,7 +1085,7 @@ public abstract class SQLDB extends Database {
      * @throws SQLException
      */
     public void savePlayerKills(int userId, List<KillData> kills) throws SQLException {
-        if (kills.isEmpty()) {
+        if (kills == null || kills.isEmpty()) {
             return;
         }
         PreparedStatement statement = connection.prepareStatement(
@@ -1092,6 +1101,9 @@ public abstract class SQLDB extends Database {
                 + ") VALUES (?, ?, ?, ?)");
         boolean commitRequired = false;
         for (KillData kill : kills) {
+            if (kill == null) {
+                continue;
+            }
             statement.setInt(1, userId);
             statement.setInt(2, kill.getVictimUserID());
             statement.setString(3, kill.getWeapon());
@@ -1101,7 +1113,6 @@ public abstract class SQLDB extends Database {
         }
         if (commitRequired) {
             statement.executeBatch();
-
         }
         statement.close();
     }
@@ -1113,7 +1124,7 @@ public abstract class SQLDB extends Database {
      * @throws SQLException
      */
     public void saveIPList(int userId, HashSet<InetAddress> ips) throws SQLException {
-        if (ips.isEmpty()) {
+        if (ips == null || ips.isEmpty()) {
             return;
         }
         PreparedStatement statement = connection.prepareStatement(
@@ -1128,6 +1139,9 @@ public abstract class SQLDB extends Database {
                 + ") VALUES (?, ?)");
         boolean commitRequired = false;
         for (InetAddress ip : ips) {
+            if (ip == null) {
+                continue;
+            }
             statement.setInt(1, userId);
             statement.setString(2, ip.getHostAddress());
             statement.addBatch();
@@ -1147,7 +1161,7 @@ public abstract class SQLDB extends Database {
      * @throws SQLException
      */
     public void saveGMTimes(int userId, HashMap<GameMode, Long> gamemodeTimes) throws SQLException {
-        if (gamemodeTimes.isEmpty()) {
+        if (gamemodeTimes == null || gamemodeTimes.isEmpty()) {
             return;
         }
         PreparedStatement statement = connection.prepareStatement(
diff --git a/Plan/src/main/java/com/djrapitops/plan/ui/Html.java b/Plan/src/main/java/com/djrapitops/plan/ui/Html.java
index 9886652d2..1605f6da9 100644
--- a/Plan/src/main/java/com/djrapitops/plan/ui/Html.java
+++ b/Plan/src/main/java/com/djrapitops/plan/ui/Html.java
@@ -103,7 +103,7 @@ public enum Html {
     public String parse(String... p) {
         String returnValue = this.html;
         for (int i = 0; i < p.length; i++) {
-            returnValue = returnValue.replaceAll("REPLACE" + i, p[i]);
+            returnValue = returnValue.replace("REPLACE" + i, p[i]);
         }
         return returnValue;
     }
diff --git a/Plan/src/main/java/com/djrapitops/plan/ui/tables/SortableCommandUseTableCreator.java b/Plan/src/main/java/com/djrapitops/plan/ui/tables/SortableCommandUseTableCreator.java
index a64427dbf..4ba34130a 100644
--- a/Plan/src/main/java/com/djrapitops/plan/ui/tables/SortableCommandUseTableCreator.java
+++ b/Plan/src/main/java/com/djrapitops/plan/ui/tables/SortableCommandUseTableCreator.java
@@ -33,7 +33,7 @@ public class SortableCommandUseTableCreator {
             } catch (IllegalArgumentException e) {
                 Plan plugin = getPlugin(Plan.class);
                 plugin.toLog("SortableCommandUseTableCreator", e);
-                plugin.toLog("Cause: "+values[1]+" "+values[2]);
+                plugin.toLog("Cause: "+values[0]+" "+values[1]);
             }
         }
         return html;
diff --git a/Plan/src/main/java/com/djrapitops/plan/utilities/HtmlUtils.java b/Plan/src/main/java/com/djrapitops/plan/utilities/HtmlUtils.java
index e75f0d036..185a0b110 100644
--- a/Plan/src/main/java/com/djrapitops/plan/utilities/HtmlUtils.java
+++ b/Plan/src/main/java/com/djrapitops/plan/utilities/HtmlUtils.java
@@ -82,9 +82,9 @@ public class HtmlUtils {
     }
 
     public static String removeXSS(String string) {
-        return string.replaceAll("<!--", "")
-                .replaceAll("-->", "")
-                .replaceAll("<script>", "")
-                .replaceAll("</script>", "");
+        return string.replace("<!--", "")
+                .replace("-->", "")
+                .replace("<script>", "")
+                .replace("</script>", "");
     }
 }