Changes Made in Remove.java 1.In removeNode(JMeterTreeNode node) method commented the following statements: GuiPackage.getInstance().removeNode(node.getTestElement()); 2.In removeNode () method added the following statements: TestElement testElement = node.getTestElement(); if(testElement instanceof ProxyControl) ((ProxyControl)testElement).stopProxy(); GuiPackage.getInstance().removeNode(testElement);