导入网表时的错误！

导入网表时出现：
#1   ERROR(SPMHNI-176): Device library error detected.
ERROR(SPMHNI-200): Error with pin number 'M5' in device 'AML8726-M3_1121_IC-BGA405-065MM': 'Unable to find pin name in adfncpin.'.
#2   ERROR(SPMHNI-176): Device library error detected.
ERROR(SPMHNI-165): Problems building functions in device 'AML8726-M3_1121_IC-BGA405-065MM': 'Unable to find pin name in adfncpin.'.
ERROR(SPMHNI-170): Device 'AML8726-M3_1121_IC-BGA405-065MM' has library errors. Unable to transfer to Allegro.
------ Summary Statistics ------

#3   Run stopped because errors were detected
netrev run on Oct 26 10:31:17 2012
   DESIGN NAME : 'MBOX_8726M3_020912_V2'
   PACKAGING ON Nov 17 2009 03:09:43
   COMPILE 'logic'
   CHECK_PIN_NAMES OFF
   CROSS_REFERENCE OFF
   FEEDBACK OFF
   INCREMENTAL OFF
   INTERFACE_TYPE PHYSICAL
   MAX_ERRORS 500
   MERGE_MINIMUM 5
   NET_NAME_CHARS '#%&()*+-./:=>?@[]^_`|'
   NET_NAME_LENGTH 24
   OVERSIGHTS ON
   REPLACE_CHECK OFF
   SINGLE_NODE_NETS ON
   SPLIT_MINIMUM 0
   SUPPRESS   20
   WARNINGS ON
  3 errors detected
No oversight detected
No warning detected
好像是pin name 的错误，但是原理图和封装都检查没问题 ，百度了的方法都解决不了！有人碰到过且解决了的啊！求解释！

pin name太长了，改短了就好了！不过很纳闷的是，有些pin name比M5的还长都没报错！ 不知道怎么搞的！

你的PIN name中有这个字符.'. ?