I am using selenium RC and working with Defaultselenium.
during my previous regression testing with the same set of code it worked properly. However it is suddenly throwing this exception today.
selenium.click("link=Changes");
selenium.waitForPageToLoad("30000");
selenium.click("link=major change for HDFC account");
selenium.waitForPageToLoad("30000");
selenium.click("link=Edit");
selenium.waitForPageToLoad("30000");
selenium.select("name=STAGEID", "label=Planning");
selenium.select("id=TECHNICIANID", "label=administrator");
selenium.select("name=CATEGORYID", "label=Software");
selenium.select("name=SUBCATEGORYID", "label=Adobe Reader");
selenium.select("name=ITEMID", "label=Install");
selenium.select("name=CHANGETYPEID", "label=New Change Type");
selenium.select("name=IMPACTID", "label=Affects Business@#$");
selenium.select("name=URGENCYID", "label=Low");
selenium.select("name=PRIORITYID", "label=Medium");
selenium.click("css=img.add-items");
selenium.click("id=SERVICES1");
selenium.click("id=SERVICES2");
selenium.click("id=SERVICES3");
selenium.click("css=button.formStylebuttonAct");
selenium.click("name=UDF_CHAR3");
selenium.select("name=UDF_CHAR3", "label=2");
selenium.click("name=UDF_CHAR2");
selenium.type("name=UDF_CHAR2", "q");
selenium.click("name=Sub");