我从网上下了一了算法工程可能是visualDSP++旧版本生成的，现在我用5.0打开每个工程时都提示如下

This project was created with a previous version of VisualDSP and must be converted to a new format.Once the project file is coverted ,
you will not be able to open it with previous version of VisualDSP a backup copy of the project file will be saved to ******

是说转换新的格式，但我点击yes之后又提示说 工程已损坏 无法打开？怎么解决这个问题呢？