在Netbeans中运行MPJ时出错

Question

当我在Netbeans中运行MPJ程序时，这是例外：

[MPJRun.java]:[MPJRun.java]:MPJ_HOME environment found..
   java.lang.Exception: [MPJRun.java]:MPJ_HOME environment found..
       at runtime.starter.MPJRun.<init>(MPJRun.java:155)
       at runtime.starter.MPJRun.main(MPJRun.java:1238)

如何解决？