Some fixes

src/main/java/com/intellectualcrafters/plot/IPlotMain.java

@@ -56,6 +56,12 @@ public interface IPlotMain {
      */
     int[] getServerVersion();
     
+    /**
+     * Get the nms package prefix
+     * @return
+     */
+    String getNMSPackage();
+    
     /**
      * Get the schematic handler
      * @return

src/main/java/com/intellectualcrafters/plot/PS.java

@@ -75,6 +75,7 @@ import com.intellectualcrafters.plot.util.MainUtil;
 import com.intellectualcrafters.plot.util.MathMan;
 import com.intellectualcrafters.plot.util.PlotGamemode;
 import com.intellectualcrafters.plot.util.PlotWeather;
+import com.intellectualcrafters.plot.util.ReflectionUtils;
 import com.intellectualcrafters.plot.util.SchematicHandler;
 import com.intellectualcrafters.plot.util.SetupUtils;
 import com.intellectualcrafters.plot.util.StringMan;
@@ -129,6 +130,7 @@ public class PS {
             this.thread = Thread.currentThread();
             SetupUtils.generators = new HashMap<>();
             IMP = imp_class;
+            new ReflectionUtils(IMP.getNMSPackage());
             URL url;
             try {
                 url = PS.class.getProtectionDomain().getCodeSource().getLocation();

src/main/java/com/intellectualcrafters/plot/commands/DebugExec.java

@@ -87,14 +87,14 @@ public class DebugExec extends SubCommand {
 
     private ScriptEngine engine;
     private Bindings scope;
-
+    
     public void init() {
         if (engine != null) {
             return;
         }
-        engine = (new ScriptEngineManager()).getEngineByName("nashorn");
+        engine = (new ScriptEngineManager(null)).getEngineByName("nashorn");
         if (engine == null) {
-            engine = (new ScriptEngineManager()).getEngineByName("JavaScript");
+            engine = (new ScriptEngineManager(null)).getEngineByName("JavaScript");
         }
         ScriptContext context = new SimpleScriptContext();
         scope = context.getBindings(ScriptContext.ENGINE_SCOPE);

src/main/java/com/intellectualcrafters/plot/database/SQLManager.java

@@ -947,7 +947,11 @@ public class SQLManager implements AbstractDB {
                     user = UUID.fromString(o);
                     uuids.put(o, user);
                 }
-                Timestamp timestamp = r.getTimestamp("timestamp");
+                Timestamp timestamp = null;
+                try {
+                    timestamp = r.getTimestamp("timestamp");
+                }
+                catch (Exception e) {};
                 long time;
                 if (timestamp == null) {
                     time = plot_id.hashCode();

src/main/java/com/intellectualcrafters/plot/util/ReflectionUtils.java

@@ -30,14 +30,18 @@ import java.util.Collections;
 import java.util.List;
 
 import org.bukkit.Bukkit;
-import org.bukkit.Server;
 
 /**
  * @author DPOH-VAR
  * @version 1.0
  */
-@SuppressWarnings({ "UnusedDeclaration", "rawtypes" })
 public class ReflectionUtils {
+    
+    public ReflectionUtils(String version) {
+        preClassB += "." + version;
+        preClassM += "." + version;
+    }
+    
     /**
      * prefix of bukkit classes
      */
@@ -46,36 +50,6 @@ public class ReflectionUtils {
      * prefix of minecraft classes
      */
     private static String preClassM = "net.minecraft.server";
-    /**
-     * boolean value, TRUE if server uses forge or MCPC+
-     */
-    private static boolean forge = false;
-    /** check server version and class names */
-    static {
-        if (Bukkit.getServer() != null) {
-            if (Bukkit.getVersion().contains("MCPC") || Bukkit.getVersion().contains("Forge")) {
-                forge = true;
-            }
-            final Server server = Bukkit.getServer();
-            final Class<?> bukkitServerClass = server.getClass();
-            String[] pas = bukkitServerClass.getName().split("\\.");
-            if (pas.length == 5) {
-                final String verB = pas[3];
-                preClassB += "." + verB;
-            }
-            try {
-                final Method getHandle = bukkitServerClass.getDeclaredMethod("getHandle");
-                final Object handle = getHandle.invoke(server);
-                final Class handleServerClass = handle.getClass();
-                pas = handleServerClass.getName().split("\\.");
-                if (pas.length == 5) {
-                    final String verM = pas[3];
-                    preClassM += "." + verM;
-                }
-            } catch (final Exception ignored) {
-            }
-        }
-    }
     
     public static Class<?> getNmsClass(final String name) {
         final String className = "net.minecraft.server." + getVersion() + "." + name;
@@ -211,13 +185,6 @@ public class ReflectionUtils {
         }
     }
 
-    /**
-     * @return true if server has forge classes
-     */
-    public static boolean isForge() {
-        return forge;
-    }
-
     /**
      * Get class for name. Replace {nms} to net.minecraft.server.V*. Replace {cb} to org.bukkit.craftbukkit.V*. Replace
      * {nm} to net.minecraft