打开db文件出错，高手帮忙解决一下

我用patran打开db文件的时候提示：“Database E:\nastran\My Disc\Model\第11章\Plane_stress\Plane_stress.db is not up to date. You have requested to open a database that is currently in MSC.Patran version 2006 14.0.018. This will require a database convert to MSC.Patran 2005. Do you wish to convert this database?”该怎么办，是不是版本不一样就不能打开呀。高手帮忙想想办法。