dxd与pcb联结问题

在project integration 阶段运行forward annotate不能完成,会有一个对话框,显示dxdesigner netlist generation failed.see dxdfwd.txt for details.查看dxdfwd.txt上面说是unable to open file d:\mentorgraphics\2005EXP\SDD_HOME\standard\expedition.cfg

我是新手,不太明白为什么不打不开这个,请各位大大们指教.谢谢！