请教DB Doctor报错问题！万分感谢！

This database has been marked as a .SAV.
ERROR IN DATABASE LIST
  ERROR(SPMHDB-252): A corrupt database pointer was detected.
ERROR IN DATABASE LIST
  ERROR(SPMHDB-252): A corrupt database pointer was detected.
ERROR IN DATABASE LIST
  ERROR(SPMHDB-252): A corrupt database pointer was detected.
ERROR IN DATABASE LIST
  ERROR(SPMHDB-252): A corrupt database pointer was detected.
WARNING   WARNING(SPMHDB-42): Run batch DRC to correctly regenerate DRC errs.
1 warnings, 4 errors detected, 0 errors could be fixed.
.SAV文件没找到，第一次画板子，光绘文件一直输出报错

tools database运行一下

运行两遍最好

运行tools-database_check很多次还是显示同样的错误，Gerber文件输出一直报错。