网表导入PADSLAYOUT，出现错误了

Reading file --  C:UsersAdminDesktop801-0003-06SCH801-0003-06.asc
*Unspecified or unsupported version of ASCII file
*pads-PCB*
Loading from library
Cannot create attribute with name
Warning: Attribute of type Part Number not allowed for specified object

**INPUT WARNINGS FOUND**



这个问题怎么解决啊？