[求助]合并pcb版时发生问题

求助！我在使用sub-drawing导入PCB版的时候（元件库已合并），发现被导入的PCB版元件序号都变成了“C？、R？、U？”，并且出现如下信息：
Clipboard Paste Session Started at Aug 14 10:11:04 2008
Component already placed.
Unable to paste the symbol - ("TII_182" "PACKAGE" "J1")
*WARNING* (axlDBCreateSymbolSkeleton): Refdes not found - "J2"
Refdes not assigned at location X 54.19 Y 165.485
Unable to paste the symbol - ("TII_182" "PACKAGE" "J2")
*WARNING* (axlDBCreateSymbolSkeleton): Refdes not found - "M12"
Refdes not assigned at location X 54.19 Y 190.985
Unable to paste the symbol - ("BLT_0_8_3MM_1_6MM_TOOLING" "PACKAGE" "M12")
*WARNING* (axlDBCreateSymbolSkeleton): Refdes not found - "M3"
Refdes not assigned at location X 49.39 Y 156.485
Unable to paste the symbol - ("BLT_0_8_3MM_1_6MM_TOOLING" "PACKAGE" "M3")
*WARNING* (axlDBCreateSymbolSkeleton): Refdes not found - "M11"
Refdes not assigned at location X 49.3454 Y 178.035
Unable to paste the symbol - ("BLT_0_8_3MM_1_6MM_TOOLING" "PACKAGE" "M11")
*WARNING* (axlDBCreateSymbolSkeleton): Refdes not found - "D8"
Refdes not assigned at location X 49.19 Y 199.685
Unable to paste the symbol - ("SMB" "PACKAGE" "D8")
*WARNING* (axlDBCreateSymbolSkeleton): Refdes not found - "C73"
Refdes not assigned at location X 55.7182 Y 150.4651
Unable to paste the symbol - ("CAP0603N" "PACKAGE" "C73")
*WARNING* (axlDBCreateSymbolSkeleton): Refdes not found - "C103"
Refdes not assigned at location X 58.39 Y 156.385
Unable to paste the symbol - ("CAP0603N" "PACKAGE" "C103")
*WARNING* (axlDBCreateSymbolSkeleton): Refdes not found - "L4"
Refdes not assigned at location X 59.19 Y 162.085
Unable to paste the symbol - ("L0805" "PACKAGE" "L4")
Refdes not assigned at location X 57.29 Y 164.185
Component already placed.
Unable to paste the symbol - ("CAP0603N" "PACKAGE" "C15")....................................有很多，估计包含了所有的元件

请教大家怎么解决这个问题？被导入的那块PCB单独做DRC检测都通过了，都很正常。就是合并的时候发生了Refdes not found 的问题！急~~求教！[em06][em06]
[此贴子已经被作者于2008-8-14 10:34:37编辑过]