PADS应用过程中的网络问题

在LOAGIC中我的元件part type和CAE都做好了,但在和PCB联接过程中,出现以下问题,能否帮我解决一下:

* ECO In Report **

Mon Apr 30 09:57:27 2007

Input  File : C:\padspwr\LogicFiles\eco2pcb.eco
Current Job : Untitled

Line 6 , Section *PART*
U1  T245PT
* Failed to get T245PT from library

Line 7 , Section *PART*
U2  T245PT
* Failed to get T245PT from library

Line 8 , Section *PART*
U3  T245PT
* Failed to get T245PT from library

Line 9 , Section *PART*
U4  T74HC138
* Failed to get T74HC138 from library

Line 12 , Section *NET*
U1.20  U2.20  U3.20
* Part name U1 not found
* Part name U2 not found
* Part name U3 not found

Line 14 , Section *NET*
U1.19  U2.19  U3.19
* Part name U1 not found
* Part name U2 not found
* Part name U3 not found

Line 15 , Section *SET_ATTRIBUTE*
*SET_ATTRIBUTE* PART U4
* Incorrect object name : U4

看看你有没有把包含你所画的元件的库加进去