Requesting a plumber?

==31155== Invalid read of size 4
==31155==    at 0x80BBB41: close_area(area_data*) (act_wiz.c:5912)
==31155==    by 0x80BBD84: close_all_areas() (act_wiz.c:5931)
==31155==    by 0x810D9D5: cleanup_memory() (comm.c:318)
==31155==    by 0x810E708: main (comm.c:559)
==31155==  Address 0x431305C is 4 bytes inside a block of size 156 free'd
==31155==    at 0x4004EFA: free (vg_replace_malloc.c:235)
==31155==    by 0x80BBD1C: close_area(area_data*) (act_wiz.c:5916)
==31155==    by 0x80BBD58: close_all_areas() (act_wiz.c:5926)
==31155==    by 0x810D9D5: cleanup_memory() (comm.c:318)
==31155==    by 0x810E708: main (comm.c:559)


#0  0x005fc7a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#1  0x0063d7a5 in raise () from /lib/tls/libc.so.6
#2  0x0063f209 in abort () from /lib/tls/libc.so.6
#3  0x00671a1a in __libc_message () from /lib/tls/libc.so.6
#4  0x006782bf in _int_free () from /lib/tls/libc.so.6
#5  0x0067863a in free () from /lib/tls/libc.so.6
#6  0x080bbd1d in close_area (pArea=0xa38dcf0) at act_wiz.c:5916
#7  0x080bbd85 in close_all_areas () at act_wiz.c:5931
#8  0x0810d9d6 in cleanup_memory () at comm.c:318
#9  0x0810e709 in main (argc=1, argv=0xbfec7684) at comm.c:559


(gdb) frame 6
#6  0x080bbd1d in close_area (pArea=0xa38dcf0) at act_wiz.c:5916
5916       DISPOSE( pArea );
Current language:  auto; currently c++
(gdb) frame 7
#7  0x080bbd85 in close_all_areas () at act_wiz.c:5931
5931          close_area( area );
(gdb) frame 8
#8  0x0810d9d6 in cleanup_memory () at comm.c:318
318        close_all_areas(  );
(gdb) frame 9
#9  0x0810e709 in main (argc=1, argv=0xbfec7684) at comm.c:559
559        cleanup_memory(  );

   DISPOSE( pArea->islandname );
   if( IS_SET( pArea->flags, AFLAG_PROTOTYPE ) )
   {
      UNLINK( pArea, first_build, last_build, next, prev );
      UNLINK( pArea, first_bsort, last_bsort, next_sort, prev_sort );
   }
   else
   {
(line 5912)      UNLINK( pArea, first_area, last_area, next, prev );
      UNLINK( pArea, first_asort, last_asort, next_sort, prev_sort );
      UNLINK( pArea, first_area_name, last_area_name, next_sort_name, prev_sort_name );
   }
(line 5916)   DISPOSE( pArea );
}