lihui0723

请高手帮助:我在使用POWER PCB画图时出现这样的提示
Fatal Data Base Error Number 2015
Invalid Database Object
Job will be backed up to file c:\power4.0\files\powerpcb.pcb
Please read the on line help topic Recovering From Database Problems.
我没办法恢复,请高手指点我这是怎么回事,要怎样处理才行.