Important K 2.0.1 Preview for guest users does not work

Hi folks,
i've discovered on my forum that the preview function for guests is not working..

On the Kunena playground section there's no public write access and i could not try to re-produce the issue. So i can't tell if it's just a bug on my site or general.

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

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

This message contains confidential information

htaccess: Exists | PHP environment: Max execution time: 50 seconds | Max execution memory: 80M | Max file upload: 96M

Kunena menu details:

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ID	Name	Menutype	Link	Path
109	Forum	kunenamenu	view=home&defaultmenu=110	forum
110	Index	kunenamenu	view=category&layout=list	forum/index
111	Recent Topics	kunenamenu	view=topics&layout=default&mode=replies	forum/recent
112	New Topic	kunenamenu	view=topic&layout=create	forum/newtopic
113	No Replies	kunenamenu	view=topics&layout=default&mode=noreplies	forum/noreplies
114	My Topics	kunenamenu	view=topics&layout=user&mode=default	forum/mylatest
115	Profile	kunenamenu	view=user	forum/profile
116	Rules	kunenamenu	view=misc	forum/rules
117	Help	kunenamenu	view=misc	forum/help
118	Search	kunenamenu	view=search	forum/search

Joomla default template details : jsn_teki_free | author: JoomlaShine.com | version: 1.1.3 | creationdate: 06/21/2012

Kunena default template details : Blue Eagle 2.0 | author: Kunena Team | version: 2.0.1 | creationdate: 2012-07-07

Kunena version detailed: Kunena 2.0.1 | 2012-07-07 [ Balozi ]
| Kunena detailed configuration:

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Kunena config settings:
board_offline	0
enablerss	0
threads_per_page	20
messages_per_page	6
messages_per_page_search	15
showhistory	1
historylimit	6
shownew	1
disemoticons	0
template	blue_eagle
showannouncement	1
avataroncat	1
catimagepath	category_images/
showchildcaticon	1
rtewidth	450
rteheight	300
enableforumjump	1
reportmsg	1
username	1
askemail	0
showemail	0
showuserstats	1
showkarma	0
useredit	1
useredittime	0
useredittimegrace	600
editmarkup	1
allowsubscriptions	1
subscriptionschecked	0
allowfavorites	1
maxsubject	50
maxsig	300
regonly	0
changename	0
pubwrite	1
floodprotection	0
mailmod	0
mailadmin	0
captcha	1
mailfull	0
allowavatarupload	1
allowavatargallery	1
avatarquality	85
avatarsize	2048
imageheight	800
imagewidth	1024
imagesize	200
filetypes	txt,rtf,pdf,zip,tar.gz,tgz,tar.bz2
filesize	512
showranking	1
rankimages	1
userlist_rows	30
userlist_online	1
userlist_avatar	1
userlist_name	0
userlist_posts	1
userlist_karma	0
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	1
showspoilertag	1
showvideotag	1
showebaytag	0
trimlongurls	1
trimlongurlsfront	40
trimlongurlsback	20
autoembedyoutube	0
autoembedebay	0
ebaylanguagecode	en-us
sessiontimeout	1800
highlightcode	1
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
defaultpage	recent
default_sort	asc
sef	1
sefutf8	0
showimgforguest	1
showfileforguest	0
pollnboptions	25
pollallowvoteone	0
pollenabled	1
poppollscount	5
showpoppollstats	1
polltimebtvotes	00:00:05
pollnbvotesbyuser	10
pollresultsuserslist	0
maxpersotext	100
ordering_system	replyid
post_dateformat	ago
post_dateformat_hover	datetime
hide_ip	1
imagetypes	jpg,jpeg,gif,png
checkmimetypes	1
imagemimetypes	image/jpeg,image/jpg,image/gif,image/png
imagequality	80
thumbheight	32
thumbwidth	32
hideuserprofileinfo	put_empty
boxghostmessage	0
userdeletetmessage	1
latestcategory_in	1
topicicons	0
debug	0
catsautosubscribed	0
showbannedreason	1
version_check	1
showthankyou	1
showpopthankyoustats	1
popthankscount	5
mod_see_deleted	0
bbcode_img_secure	text
listcat_show_moderators	1
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	post
topic_subscriptions	every
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	0
article_display	full
send_emails	1
fallback_english	1
cache	1
cache_time	60
enablepdf	1
jmambot	0
annmodid	62,66,102
userlist_username	1
rules_infb	1
help_infb	1
onlineusers	0

| Kunena integration settings:

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

| Joomla! detailed language files installed:

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Joomla! languages installed:
en-GB	English (United Kingdom)
es-ES	Spanish (español)
fr-FR	Français (FR)

Third-party components: UddeIM 2.7

Third-party SEF components: None

Plugins: Content - Kunena Discuss 2.0.1

Modules: Kunena Latest 2.0.1 | Kunena Login 2.0.1

Best regards

This issue is not of your website. It is probably this error. This is fixed in the next version
github.com/Kunena/Kunena-2.0/issues/980