各位，这个问题怎么解决？

RIPUP_ETCH FALSE;
RIPUP_DELETE_FIRST_SEGMENT FALSE;
RIPUP_RETAIN_BONDWIRE FALSE;
RIPUP_SYMBOLS ALWAYS;
Missing symbol has error FALSE;
SCHEMATIC_DIRECTORY 'xc4v1x160';
BOARD_DIRECTORY '';
OLD_BOARD_NAME 'E:/works/cadence/sch/6416/sch1/physical/xc4v1x160.brd';
NEW_BOARD_NAME 'E:/works/cadence/sch/6416/sch1/physical/xc4v1x160.brd';
CmdLine: netrev -$ -i xc4v1x160 -l -y 1 E:/works/cadence/sch/6416/sch1/physical/#Taaaaaa07068.tmp
------ Preparing to read pst files ------

#1   ERROR(24) File not found
     Packager files not found
#2   ERROR(102) Run stopped because errors were detected
netrev run on Apr 2 19:40:44 2016
   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      0:00:35
elapsed time  0:00:00