Important Error after Login!

Hi,

I noticed that since today my forum displays this message after I try to login:


Error: headers already sent in on line .
Stopped at line 1395 in uri.php

I tried logging in with different accounts both user and administrator accounts but nothing works.
Haven't upgraded anything at my forum

Please read the posting guidelines printed at the top of this page and include all relevant information to your specific situation. Thank you.

I'm using Kunena 1.6.3 and Joomla 1.5.22 if that is the more information you'd like to know

The report configuration settings in the backend are:

Database collation check: The collation of your table fields are correct

Legacy mode: Disabled | Joomla! SEF: Enabled | Joomla! SEF rewrite: Enabled | FTP layer: Disabled |

This message contains confidential information

htaccess: Exists | PHP environment: Max execution time: 1000 seconds | Max execution memory: 256M | Max file upload: 128M

Joomla default template details : yoo_pure | author: YOOtheme | version: 5.5.5 | creationdate: February 2011

Kunena default template details : Blue Eagle (default) | author: Kunena Team | version: 1.6.3 | creationdate: 2011-01-31

Kunena version detailled: Installed version: 1.6.3 | Build: 4344 | Version name: Parlare | Kunena detailled configuration:

Warning: Spoiler!

[th]Kunena config settings:[/th]

board_title	Marion Raven Forum
board_offline	0
board_ofset	0
offline_message	<h2>The Forum is currently offline for maintenance.</h2> <div>Check back soon!</div>
enablerss	1
enablepdf	1
threads_per_page	30
messages_per_page	10
messages_per_page_search	15
showhistory	1
historylimit	6
shownew	1
jmambot	0
disemoticons	0
template	default
showannouncement	0
avataroncat	0
catimagepath	category_images/
showchildcaticon	1
annmodid	62
rtewidth	450
rteheight	300
enableforumjump	1
reportmsg	1
username	1
askemail	1
showemail	0
showuserstats	1
showkarma	1
useredit	1
useredittime	0
useredittimegrace	600
editmarkup	1
allowsubscriptions	1
subscriptionschecked	1
allowfavorites	1
maxsubject	50
maxsig	300
regonly	0
changename	0
pubwrite	0
floodprotection	0
mailmod	0
mailadmin	0
captcha	0
mailfull	1
allowavatar	1
allowavatarupload	1
allowavatargallery	1
avatarquality	65
avatarsize	2048
allowimageupload	0
allowimageregupload	1
imageheight	800
imagewidth	800
imagesize	6000
allowfileupload	0
allowfileregupload	1
filetypes	zip,txt,doc,gz,tgz
filesize	120
showranking	1
rankimages	1
avatar_src
fb_profile
pm_component
userlist_rows	30
userlist_online	1
userlist_avatar	1
userlist_name	1
userlist_username	1
userlist_posts	1
userlist_karma	1
userlist_email	0
userlist_usertype	0
userlist_joindate	1
userlist_lastvisitdate	1
userlist_userhits	1
latestcategory	0
showstats	1
showwhoisonline	1
showgenstats	1
showpopuserstats	1
popusercount	5
showpopsubjectstats	1
popsubjectcount	5
usernamechange	0
rules_infb	0
rules_cid	1
help_infb	0
help_cid	1
showspoilertag	1
showvideotag	1
showebaytag	1
trimlongurls	1
trimlongurlsfront	40
trimlongurlsback	20
autoembedyoutube	1
autoembedebay	1
ebaylanguagecode	en-us
fbsessiontimeout	1800
highlightcode	0
rss_type	topic
rss_timelimit	month
rss_limit	100
rss_included_categories
rss_excluded_categories
rss_specification	rss2.0
rss_allow_html	1
rss_author_format	name
rss_author_in_title	1
rss_word_count	0
rss_old_titles	1
rss_cache	900
fbdefaultpage	categories
default_sort	asc
alphauserpointsnumchars	0
sef	1
sefcats	0
sefutf8	0
showimgforguest	1
showfileforguest	1
pollnboptions	4
pollallowvoteone	1
pollenabled	1
poppollscount	5
showpoppollstats	1
polltimebtvotes	00:15:00
pollnbvotesbyuser	100
pollresultsuserslist	1
maxpersotext	50
ordering_system	mesid
post_dateformat	ago
post_dateformat_hover	datetime
hide_ip	1
js_actstr_integration	0
imagetypes	jpg,jpeg,gif,png
checkmimetypes	1
imagemimetypes	image/jpeg,image/jpg,image/gif,image/png
imagequality	50
thumbheight	32
thumbwidth	32
hideuserprofileinfo	put_empty
integration_access	jomsocial
integration_login	jomsocial
integration_avatar	jomsocial
integration_profile	jomsocial
integration_private	jomsocial
integration_activity	none
boxghostmessage	0
userdeletetmessage	0
latestcategory_in	1
topicicons	1
onlineusers	1
debug	0
catsautosubscribed	0
showbannedreason	0
version_check	1
showthankyou	1
showpopthankyoustats	1
popthankscount	5
mod_see_deleted	0
bbcode_img_secure	text
listcat_show_moderators	1
lightbox	1
activity_limit	0
show_list_time	720
show_session_type	0
show_session_starttime	0
userlist_allowed	0

Third-party components: AlphaUserPoints: Disabled or not installed | CommunityBuilder: Disabled or not installed | Jomsocial: Installed (Version : 2.2.0) | UddeIm: Disabled or not installed

Third-party SEF components: sh404sef: Disabled or not installed | ARTIO JoomSEF: Disabled or not installed | AceSEF: Installed (Version : 1.5.15)

Plugins: System - Mootools12: Disabled | System - Mootools Upgrade: Enabled | JFirePHP: Disabled or not installed | Kunena Discuss: Disabled or not installed | Kunena Search: Disabled or not installed | My Kunena Forum Menu: Disabled or not installed | My Kunena Forum Posts: Disabled or not installed

Modules: Kunena Latest: Disabled or not installed | Kunena Stats: Disabled or not installed | Kunena Login: Disabled or not installed

It looks like you have some SEO issues on your website. Disable AceSEF for your Kunena pages (or, if necessary, uninistall AceSEF) to see if that fixes your problems.

Are you still getting the error messages that you reported when you login?

I've disabled Acesef for kunena and that worked out. There must be something wrong with their last update.
Thank you!