FastLoad AXSMOD invoke error

Hi,
       Fastload with Access Module have a error:
**** 07:08:44 Teradata Database Release: 13.10.00.10
**** 07:08:44 Teradata Database Version: 13.10.00.14
**** 07:08:44 Current CLI or RDBMS allows maximum row size: 64K
**** 07:08:44 Character set for this job: ASCII
0002 database petl;
**** 07:08:44 Command completed successfully
0003 BEGIN LOADING     book1   ERRORFILES  book1_E1, book1_e2 INDICATORS;
**** 07:08:44 Indicator mode is set to ON
**** 07:08:45 Number of FastLoad sessions connected = 2
**** 07:08:45 FDL4808 LOGON successful
**** 07:08:48 Number of AMPs available: 2
**** 07:08:48 BEGIN LOADING COMPLETE
0004 AXSMOD ./amEXTPGM.so "CSV2FLD 4 ";
**** 07:08:48 I/O Error on Open: 3, Text: Requested Access Module not
              found
**** 07:08:48 Error: Invalid pmHandle parameter
**** 07:08:48 Error: Invalid pmHandle parameter
     ===================================================================
     =                                                                 =
     =          Logoff/Disconnect                                      =
     =                                                                 =
     ===================================================================
**** 07:08:48 Logging off all sessions
**** 07:08:48 Total processor time used = '0.17 Seconds'
     .        Start : Fri Aug 23 07:08:28 2013
     .        End   : Fri Aug 23 07:08:48 2013
     .        Highest return code encountered = '12'.
**** 07:08:48 FastLoad Paused
     the amExtPgm.c is ok on the other site.  I compile it with this command:gcc -shared -fPIC amExtPgm.c -o amEXTPGM.so
      CSV2FLD is a program to pre-process csv file. it runs ok independently.
       Does anyone know what reason for the error:Requested Access Module not found? If it's not right for compile command?         
       thank for you help!