diff --git a/org.adempiere.base/src/org/adempiere/util/ProcessUtil.java b/org.adempiere.base/src/org/adempiere/util/ProcessUtil.java
index f3cec3714f..da0f39d49e 100644
--- a/org.adempiere.base/src/org/adempiere/util/ProcessUtil.java
+++ b/org.adempiere.base/src/org/adempiere/util/ProcessUtil.java
@@ -24,6 +24,7 @@ import java.math.BigDecimal;
 import java.sql.CallableStatement;
 import java.sql.ResultSet;
 import java.util.Properties;
+import java.util.UUID;
 import java.util.logging.Level;
 
 import javax.script.ScriptEngine;
@@ -159,8 +160,52 @@ public final class ProcessUtil {
 		process = Core.getProcess(className);
 
 		if (process == null) {
-			pi.setSummary("Failed to create new process instance for " + className, true);
+			//Get Class
+			Class<?> processClass = null;
+			//use context classloader if available
+			ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
+			if (classLoader != null)
+			{
+				try
+				{
+					processClass = classLoader.loadClass(className);
+				}
+				catch (ClassNotFoundException ex)
+				{
+					log.log(Level.FINE, className, ex);
+				}
+			}
+			if (processClass == null)
+			{
+				classLoader = ProcessUtil.class.getClassLoader();
+				try
+				{
+					processClass = classLoader.loadClass(className);
+				}
+				catch (ClassNotFoundException ex)
+				{
+					log.log(Level.WARNING, className, ex);
+					pi.setSummary ("ClassNotFound", true);
 			return false;
+				}
+			}
+
+			if (processClass == null) {
+				pi.setSummary("No Instance for " + pi.getClassName(), true);
+				return false;
+			}
+
+			//Get Process
+			try
+			{
+				process = (ProcessCall)processClass.newInstance();
+			}
+			catch (Exception ex)
+			{
+				log.log(Level.WARNING, "Instance for " + className, ex);
+				pi.setSummary ("InstanceError", true);
+				return false;
+			}
 		}
 
 		boolean success = false;
@@ -223,7 +268,7 @@ public final class ProcessUtil {
 			// now add the method arguments to the engine
 			engine.put(MRule.ARGUMENTS_PREFIX + "Ctx", ctx);
 			if (trx == null)
-				trx = Trx.get(pi.getTitle()+"_"+pi.getAD_PInstance_ID(), true);
+				trx = Trx.get(pi.getTitle()+"_"+pi.getAD_PInstance_ID() + "_" + UUID.randomUUID(), true);
 			engine.put(MRule.ARGUMENTS_PREFIX + "Trx", trx);
 			engine.put(MRule.ARGUMENTS_PREFIX + "TrxName", trx.getTrxName());
 			engine.put(MRule.ARGUMENTS_PREFIX + "Record_ID", pi.getRecord_ID());
diff --git a/org.adempiere.base/src/org/compiere/model/MRule.java b/org.adempiere.base/src/org/compiere/model/MRule.java
index bdf7b2adcf..d50ac7a447 100644
--- a/org.adempiere.base/src/org/compiere/model/MRule.java
+++ b/org.adempiere.base/src/org/compiere/model/MRule.java
@@ -26,6 +26,7 @@ import java.util.Properties;
 import javax.script.ScriptEngine;
 import javax.script.ScriptEngineManager;
 
+import org.compiere.Adempiere;
 import org.compiere.util.CCache;
 import org.compiere.util.CLogger;
 import org.compiere.util.Msg;
@@ -195,7 +196,7 @@ public class MRule extends X_AD_Rule
 	 *	@return ScriptEngine
 	 */
 	public ScriptEngine getScriptEngine() {
-		factory = new ScriptEngineManager();
+		factory = new ScriptEngineManager(Adempiere.class.getClassLoader());
 		String engineName = getEngineName();
 		if (engineName != null)
 			engine = factory.getEngineByName(getEngineName());
diff --git a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/process/WProcessInfo.java b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/process/WProcessInfo.java
index 5f873092e8..350d05bb74 100644
--- a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/process/WProcessInfo.java
+++ b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/process/WProcessInfo.java
@@ -116,11 +116,11 @@ public class WProcessInfo extends ProcessInfo {
 		//try append W prefix to class name
 		if (zkName == null)
 		{
-			int lastdot = className.lastIndexOf(".");
-			zkName = className.substring(0, lastdot) + ".W" +  className.substring(lastdot+1);
 			try {
+				int lastdot = className.lastIndexOf(".");
+				zkName = className.substring(0, lastdot) + ".W" +  className.substring(lastdot+1);
 				this.getClass().getClassLoader().loadClass(zkName);
-			} catch (ClassNotFoundException e) {
+			} catch (Exception e) {
 				zkName = null;
 			}
 		}