Upgrade CiviCRM From 3.4.0 to Version 3.4.8

[dhirendra]

Drupal version : Drupal 6

warning: file_get_contents(sites/all/modules/civicrm/drupal/../packages/jquery/plugins/checkboxselect.js): failed to open stream: No such file or directory in /home/njapm/d6/www/includes/common.inc on line 2520.
Operating in off-line mode.
CiviCRM upgrade was successful.

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We followed the steps given below in the documentation.
http://wiki.civicrm.org/confluence/display/CRMDOC41/Upgrade+Drupal+Sites+to+4.1+-+Drupal+6

will this warning give any problem while upgrading to higher civicrm versions