请问高手我在allegro中导入网络表出现以下错误时什么原因？谢谢！

#2   ERROR(102) Run stopped because errors were detected
netrev run on Jan 5 11:47:39 2012
   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
  2 errors detected
No oversight detected
No warning detected
cpu time      0:00:25
elapsed time  0:00:00