项目启动不了，大神求教
Myeclipse 导入一个新的项目，然后再运行以前那个就报错，删除新的也不行，
Launching HPSSystem on Myeclipse Tomcat ' has encountered a problem
An internal error occurred during :"Launching HPSSystem on MyEclipse Tomcat";

点开详细以后
An internal error occurred during: "Launching HPSSystem
on MyEclipse Tomcat ".
java.lang.NullPointerException



不如如何解决求大神