Fatal error during import

During import of the node (attached) from Drupal 6 to Drupal 7:

Fatal error: Cannot use string offset as an array in /home/manveru/www/new.manveru.pl/htdocs/sites/all/modules/node_export/modules/node_export_d6_migrate/node_export_d6_migrate.module on line 39

Call Stack:
    0.0002     682696   1. {main}() /home/manveru/www/new.manveru.pl/htdocs/index.php:0
    0.5542   37425256   2. menu_execute_active_handler() /home/manveru/www/new.manveru.pl/htdocs/index.php:22
    0.5553   37596800   3. call_user_func_array() /home/manveru/www/new.manveru.pl/htdocs/includes/menu.inc:501
    0.5553   37597136   4. drupal_get_form() /home/manveru/www/new.manveru.pl/htdocs/includes/menu.inc:0
    0.5553   37597984   5. drupal_build_form() /home/manveru/www/new.manveru.pl/htdocs/includes/form.inc:188
    0.6102   38371752   6. drupal_process_form() /home/manveru/www/new.manveru.pl/htdocs/includes/form.inc:350
    0.6124   38451208   7. form_execute_handlers() /home/manveru/www/new.manveru.pl/htdocs/includes/form.inc:830
    0.6124   38454656   8. node_export_import_form_submit() /home/manveru/www/new.manveru.pl/htdocs/includes/form.inc:1390
    0.6124   38461464   9. node_export_import() /home/manveru/www/new.manveru.pl/htdocs/sites/all/modules/node_export/node_export.pages.inc:487
    0.6815   38576008  10. drupal_alter() /home/manveru/www/new.manveru.pl/htdocs/sites/all/modules/node_export/node_export.module:426
    0.6820   38585488  11. node_export_d6_migrate_node_export_node_import_alter() /home/manveru/www/new.manveru.pl/htdocs/includes/module.inc:1002
    0.6820   38585488  12. node_export_d6_migrate_process_node_body() /home/manveru/www/new.manveru.pl/htdocs/sites/all/modules/node_export/modules/node_export_d6_migrate/node_export_d6_migrate.module:16