Question error when searching terms has latin characters (as í or ñ)

Hi, mi Kunena Forum works great, except for one thing: my site is mainly in spanish and I get this error when trying to search a terms like "líder" (or even "líder"):

variable $0
key value
$file "E:\LocalServer\xampp\htdocs\joomla_en\components\com_kunena\lib\kunena.debug.php"
$line "42"
$function "debug_callstackinfo"
[args] Nested Array


variable $1
key value
$file "E:\LocalServer\xampp\htdocs\joomla_en\components\com_kunena\lib\kunena.debug.php"
$line "62"
$function "trigger_dberror"
[args] Nested Array


variable $2
key value
$file "E:\LocalServer\xampp\htdocs\joomla_en\components\com_kunena\lib\kunena.search.class.php"
$line "148"
$function "check_dberror"
[args] Nested Array


variable $3
key value
$file "E:\LocalServer\xampp\htdocs\joomla_en\components\com_kunena\kunena.php"
$line "796"
$function "CKunenaSearch"
$class "CKunenaSearch"
$type "->"
[args] Nested Array


variable $4
key value
$file "E:\LocalServer\xampp\htdocs\joomla_en\libraries\joomla\application\component\helper.php"
$line "162"
[args] Nested Array
$function "require_once"


variable $5
key value
$file "E:\LocalServer\xampp\htdocs\joomla_en\includes\application.php"
$line "124"
$function "renderComponent"
$class "JComponentHelper"
$type "->"
[args] Nested Array


variable $6
key value
$file "E:\LocalServer\xampp\htdocs\joomla_en\index.php"
$line "68"
$function "dispatch"
$class "JSite"
$type "->"
[args] Nested Array
"
Installed version: 1.0.8 | 2009-02-17 | 1166 [ Speakup! ] | php 5.2.8 | mysql 5.1.30-community

Fatal error: Unable to count messages.\nDB function reports no errors in E:\LocalServer\xampp\htdocs\joomla_en\components\com_kunena\lib\kunena.debug.php on line 54

I am testing Kunena in a local server, and this is the only error I get. I do not know why...

Do you have Joomla 1.5 installed? Search seems to be working fine for me, so we need to track this down..

Yes, Matías, I tested it in the latest Joomla 1.5, on my local server. But it works right when uploaded online, at democraciaparticipativa(.)net.

The problem should be related with the character set of the database. In my local server my database is latin1_swedish_ci coded, against the utf8_general_ci coded in the web online (although in both cases each one of its tables are utf8_general_ci coded). Possibly this incongruence between the character set of the database and the character set of its tables generated the errors in the local searching.

Thank you for this information. I will try to look how should I fix these problems inside Kunena.