本人是软件测试新手，初次接触LoadRunner,请教大神帮我看下录制java脚本,为什么报错？

wlbxlh

电脑安装了Myeclipse8.6和LoadRunner12在网上找的最简单的实例，创建了最基本的HelloWord类，已将整个包放在Java\jdk1.6.0_10\lib下
我的path配置为.;C:\Program Files (x86)\Java\jdk1.6.0_10\bin;C:\Program Files (x86)\Java\jdk1.6.0_10\jre\bin;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%JAVA_HOME%/bin;%JAVA_HOME%/jre/bin;%Android_Home%/tools;C:\strawberry\c\bin;C:\strawberry\perl\bin;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\;C:\Program Files\TortoiseSVN\bin;C:\Program Files (x86)\Subversion\bin;C:\Program Files (x86)\HP\LoadRunner\strawberry-perl\perl\bin
classpath配置为：.;%JAVA_HOME%/lib;%JAVA_HOME%/lib/tools.jar;D:\android-sdk-windows\android-sdk-windows\tools;C:\Program Files (x86)\HP\LoadRunner\classes;C:\Program Files (x86)\HP\LoadRunner\lib
脚本代码为：
import lrapi.lr;
import com.lr.test.*;
public class Actions
{

        public int init() throws Throwable {
                return 0;
        }//end of init


        public int action() throws Throwable {
                HelloWord.main((String[])null);
                return 0;
        }//end of action


        public int end() throws Throwable {
                return 0;
        }//end of end
}
运行就报错,Error: Extension lrwreplaymain.dll is not loaded. System error: [param not passed in call]
Error: Extension lrwreplaymain.dll is not loaded. System error: [param not passed in call]
Error: Thread Context: Call to service of the driver failed, reason - thread context wasn't initialized on this thread.
但是我的安装目录里有lrwreplaymain.dll啊？请大神帮我看下，出错的原因是什么啊？感谢啦！