Uninitialized string offset: 0

[Svish]

Getting another exception on some log-files. Here is the content of one that does:

<?php defined('SYSPATH') or die('No direct script access.'); ?>

2012-04-10 06:30:21 --- ERROR: HTTP_Exception_404 [ 404 ]: The requested URL tag/announcement was not found on this server. ~ SYSPATH/classes/kohana/request/client/internal.php [ 87 ]
2012-04-10 10:50:17 --- ERROR: HTTP_Exception_404 [ 404 ]: The requested URL tag/concert was not found on this server. ~ SYSPATH/classes/kohana/request/client/internal.php [ 87 ]
2012-04-10 16:45:40 --- ERROR: HTTP_Exception_401 [ 401 ]: To access member/password, you need to log in. ~ APPPATH/classes/controller.php [ 56 ]
2012-04-10 16:45:41 --- ERROR: HTTP_Exception_400 [ 400 ]: Unknown or expired reset token. ~ APPPATH/classes/controller/member.php [ 222 ]
2012-04-10 16:46:35 --- ERROR: HTTP_Exception_400 [ 400 ]: Unknown or expired reset token. ~ APPPATH/classes/controller/member.php [ 222 ]
2012-04-10 18:58:28 --- ERROR: HTTP_Exception_401 [ 401 ]: To access song/practice, you need to log in. ~ APPPATH/classes/controller.php [ 56 ]
2012-04-10 19:04:24 --- ERROR: HTTP_Exception_401 [ 401 ]: To access song/practice, you need to log in. ~ APPPATH/classes/controller.php [ 56 ]
2012-04-10 20:14:50 --- ERROR: HTTP_Exception_401 [ 401 ]: To access song/practice, you need to log in. ~ APPPATH/classes/controller.php [ 56 ]
2012-04-10 20:43:22 --- ERROR: HTTP_Exception_401 [ 401 ]: To access member/password, you need to log in. ~ APPPATH/classes/controller.php [ 56 ]
2012-04-10 20:43:22 --- ERROR: HTTP_Exception_400 [ 400 ]: Unknown or expired reset token. ~ APPPATH/classes/controller/member.php [ 222 ]
2012-04-10 20:44:24 --- ERROR: HTTP_Exception_400 [ 400 ]: Unknown or expired reset token. ~ APPPATH/classes/controller/member.php [ 222 ]
2012-04-10 21:32:41 --- ERROR: HTTP_Exception_401 [ 401 ]: To access song/practice, you need to log in. ~ APPPATH/classes/controller.php [ 56 ]
2012-04-10 21:36:19 --- ERROR: ErrorException [ 8 ]: Uninitialized string offset: 0 ~ MODPATH/logviewer/classes/model/logreport.php [ 45 ]
2012-04-10 21:36:27 --- ERROR: ErrorException [ 8 ]: Uninitialized string offset: 0 ~ MODPATH/logviewer/classes/model/logreport.php [ 45 ]
2012-04-10 21:36:44 --- ERROR: ErrorException [ 8 ]: Uninitialized string offset: 0 ~ MODPATH/logviewer/classes/model/logreport.php [ 45 ]
2012-04-10 21:36:51 --- ERROR: ErrorException [ 8 ]: Uninitialized string offset: 0 ~ MODPATH/logviewer/classes/model/logreport.php [ 45 ]