I had the same error and am also using a template with no right side boxes. This fix worked for me as well, in case anyone else is looking to fix this issue.

Quote Originally Posted by hllight View Post
By making the follwing change, it fixed the problem listed in my previous message:

[FONT=Tahoma]Should you be using a template, like Apple Zen, with the no sidebox option selected, you will need to track the packages from the “My Account” page and install the following change:[/FONT]

[FONT=Tahoma]Mandatory change if the no sidebox option is selected[/FONT]
[FONT=Tahoma]To allow the user to track packages from the “My Account” page:[/FONT]

[FONT=Tahoma]Open single spaced in an HTML editor “includes/filenames.php” file and proceed to the following change:[/FONT]

[FONT=Tahoma]Before the modification at or near line 19:[/FONT]
[FONT=Tahoma]define('FILENAME_ACCOUNT_HISTORY_INFO', 'account_history_info'); [/FONT]

[FONT=Tahoma]After the modification at or near line 19:[/FONT]
[FONT=Tahoma]// This is the original line[/FONT]
[FONT=Tahoma]// define('FILENAME_ACCOUNT_HISTORY_INFO', 'account_history_info');[/FONT]
[FONT=Tahoma]define('FILENAME_ACCOUNT_HISTORY_INFO', 'tracker');[/FONT]