Question Fatal error: Access to undeclared static property: JLoader::$classes in ../libraries/loader.php on line 195

Yes, another error 500 topic, apologies...

I read a lot about this but really cant figure it out. After upgrading from the latest 2 version to 3.1 I get an error 500, but only on the forum homepage / index. All else is working perfectly?!

The error:
Fatal error: Access to undeclared static property: JLoader::$classes in /home/bonsai7/public_html/testsite/libraries/loader.php on line 195


I reset the menu, disabled most of my other plugins, but the error persists. Only when I disable SEF for Kunena (from the JoomSEF extensions) did it work. I use the latest JoomSEF version...


Hope the fact that I only get it on the homepage of the forum rings a bell to someone, so I can solve this issue.

PS:

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

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

This message contains confidential information

htaccess: Exists | PHP environment: Max execution time: 45 seconds | Max execution memory: 384M | Max file upload: 256M

Kunena menu details:

Warning: Spoiler!

ID	Name	Menutype	Link	Path
531	Forum	mainmenu	Itemid=895	kunena-2013-07-30
895	Forum	kunenamenu	view=home&defaultmenu=897	forum
896	Index	kunenamenu	view=category&layout=list	forum/index
897	Recent Topics	kunenamenu	view=topics&mode=replies	forum/recent
898	New Topic	kunenamenu	view=topic&layout=create	forum/newtopic
899	No Replies	kunenamenu	view=topics&mode=noreplies	forum/noreplies
900	My Topics	kunenamenu	view=topics&layout=user&mode=default	forum/mylatest
901	Profile	kunenamenu	view=user	forum/profile
902	Help	kunenamenu	view=misc	forum/help
903	Search	kunenamenu	view=search	forum/search

Joomla default template details : general_commerce | author: Shape5.com | version: 1.0 | creationdate: Unknown

Kunena default template details : Blue Eagle 2.0 | author: Kunena Team | version: 3.0.1 | creationdate: 2013-06-29

Kunena version detailed: Kunena 3.0.1 | 2013-06-29 [ Noordwijkerhout ]
| Kunena detailed configuration:

Warning: Spoiler!

Kunena config settings:
board_offline	0
enablerss	0
threads_per_page	20
messages_per_page	10
messages_per_page_search	15
showhistory	1
historylimit	3
shownew	1
disemoticons	0
template	blue_eagle
showannouncement	0
avataroncat	0
catimagepath	category_images/
showchildcaticon	0
rtewidth	450
rteheight	300
enableforumjump	0
reportmsg	1
username	1
askemail	0
showemail	0
showuserstats	1
showkarma	0
useredit	1
useredittime	600
useredittimegrace	600
editmarkup	1
allowsubscriptions	1
subscriptionschecked	0
allowfavorites	0
maxsubject	50
maxsig	200
regonly	0
pubwrite	0
floodprotection	0
mailmod	0
mailadmin	0
captcha	0
mailfull	0
allowavatarupload	1
allowavatargallery	0
avatarquality	65
avatarsize	2048
imageheight	800
imagewidth	800
imagesize	2048
filetypes	txt,rtf,pdf,zip,tar.gz,tgz,tar.bz2
filesize	1024
showranking	1
rankimages	1
userlist_rows	30
userlist_online	1
userlist_avatar	1
userlist_name	1
userlist_posts	1
userlist_karma	0
userlist_email	0
userlist_joindate	1
userlist_lastvisitdate	1
userlist_userhits	1
latestcategory
showstats	1
showwhoisonline	1
showgenstats	1
showpopuserstats	1
popusercount	5
showpopsubjectstats	1
popsubjectcount	5
usernamechange	0
showspoilertag	0
showvideotag	0
showebaytag	0
trimlongurls	1
trimlongurlsfront	40
trimlongurlsback	20
autoembedyoutube	0
autoembedebay	0
ebaylanguagecode	en-us
sessiontimeout	1800
highlightcode	0
rss_type	post
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
defaultpage	recent
default_sort	asc
sef	1
showimgforguest	0
showfileforguest	0
pollnboptions	4
pollallowvoteone	1
pollenabled	1
poppollscount	5
showpoppollstats	0
polltimebtvotes	00:15:00
pollnbvotesbyuser	100
pollresultsuserslist	1
maxpersotext	50
ordering_system	mesid
post_dateformat	ago
post_dateformat_hover	datetime
hide_ip	1
imagetypes	jpg,jpeg,gif,png
checkmimetypes	0
imagemimetypes	image/jpeg,image/jpg,image/gif,image/png
imagequality	80
thumbheight	140
thumbwidth	140
hideuserprofileinfo	put_empty
boxghostmessage	0
userdeletetmessage	1
latestcategory_in	1
topicicons	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	0
lightbox	1
show_list_time	720
show_session_type	0
show_session_starttime	0
userlist_allowed	1
userlist_count_users	1
enable_threaded_layouts	0
category_subscriptions	topic
topic_subscriptions	first
pubprofile	0
thankyou_max	10
email_recipient_count	0
email_recipient_privacy	bcc
captcha_post_limit	0
keywords	0
userkeywords	0
image_upload	registered
file_upload	registered
topic_layout	flat
time_to_create_page	0
show_imgfiles_manage_profile	1
hold_newusers_posts	0
hold_guest_posts	0
attachment_limit	8
pickup_category	1
article_display	intro
send_emails	1
fallback_english	1
cache	1
cache_time	180
iptracking	1
rss_feedburner_url
autolink	1
access_component	0
userlist_usertype	0
sefutf8	0
changename	0
enablepdf	0
jmambot	0
annmodid	62
userlist_username	1
rules_infb	1
help_infb	1
onlineusers	0

| Kunena integration settings:

Warning: Spoiler!

Kunena - AlphaUserPoints Disabled
Kunena - Community Builder Disabled
Kunena - Gravatar Disabled
Kunena - JomSocial Disabled
Kunena - Joomla Enabled: access=1 login=0
Kunena - Kunena Enabled: avatar=1 profile=1
Kunena - UddeIM Enabled: private=1

| Joomla! detailed language files installed:

Warning: Spoiler!

Joomla! languages installed:
en-GB	English (United Kingdom)
en-US	English (USA)

Third-party components: UddeIM 3.0

Third-party SEF components: None

Plugins: None

Modules: Kunena Latest 3.0.1

Hello,

This is more a Joomla! issue and by looking the error message the issue is located in Joomla!, do-you have reported the issue on forum.joomla.org ?

No, but since all else is working fine and these errors only appear after updating to the new Kunena I figured I had to ask here.

Before turning to Joomla (and probably hearing there that I should ask at Kunena..) could you help me at least in what direction I have to look to solve this? I am really stuck...

Try to disable kunena latest to see if the problem still happens, i don't know what is exactly causing this

Oscar2 wrote: Before turning to Joomla (and probably hearing there that I should ask at Kunena) ...

I strongly doubt that because the problem involves SEF URLs and Kunena URLs have always been "search engine-friendly" depending on how you setup search engine optimisation within Joomla. In your case, you have chosen to do that using Artio JoomSEF. That's your choice. You should also be aware that, as far as we know, Artio JoomSEF is not compatible with K 3.0.1 . Perhaps the situation has changed but no member of the community has informed us that they've successfully tested K 3.0.1 with Artio JoomSEF.

Perhaps you might like to ask the developers of Artio JoomSEF whether their "latest version" works with K 3.0.1? :dry:

Oscar2 wrote: ... could you help me at least in what direction I have to look to solve this? I am really stuck.

Apart from using Artio JoomSEF, the only other thing that leaps out from your configuration is the Shape5.com site template that you are using which was probably designed for an older version of Joomla (perhaps when you were using J! 1.5.21).

There are two things you should investigate first and, after that, you can ask your question on the Joomla forum and I am quietly confident that they will say much the same as what I just wrote.