Solved K 3.0.2 message preview not working

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

Joomla! SEF: Enabled | Joomla! SEF rewrite: Disabled | FTP layer: Disabled |
htaccess: Exists | PHP environment: Max execution time: 120 seconds | Max execution memory: 128M | Max file upload: 25M

Kunena menu details:

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ID	Name	Menutype	Link	Path
100244	Forum	mainmenu	view=home&defaultmenu=96	forum
100253	Cerca nel Forum	mainmenu	view=search	cerca-nel-forum
100247	Messaggi Recenti	mainmenu	view=topics&layout=posts&mode=recent&userid=	messaggi-recenti
100245	Profilo Utente	mainmenu	view=user	profilo-utente
100266	Forum	kunenamenu	view=home&defaultmenu=100268	kunena
100267	Indice delle categorie	kunenamenu	view=category&layout=list	kunena/home
100268	Discussioni recenti	kunenamenu	view=topics&mode=replies	kunena/recente
100269	Nuova discussione	kunenamenu	view=topic&layout=create	kunena/nuovadiscussione
100270	Senza risposta	kunenamenu	view=topics&mode=noreplies	kunena/senzarisposte
100271	Mie discussioni	kunenamenu	view=topics&layout=user&mode=default	kunena/mierecenti
100272	Profilo	kunenamenu	view=user	kunena/profilo
100273	Aiuto	kunenamenu	view=misc	kunena/aiuto
100274	Ricerca	kunenamenu	view=search	kunena/cerca
100275	Forum	mainmenu	Itemid=100266	kunena-2015-01-16

Joomla default template details : a4joomla-stonewall-free | author: a4joomla.com | version: 1.0 | creationdate: Unknown

Kunena default template details : Blue Eagle | author: Kunena Team | version: 3.0.6 | creationdate: 2014-07-28

Kunena version detailed: Kunena 3.0.6 | 2014-07-28 [ Tala ]
| Kunena detailed configuration:

Warning: Spoiler!

Kunena config settings:
board_offline	0
enablerss	1
threads_per_page	20
messages_per_page	10
messages_per_page_search	15
showhistory	1
historylimit	6
shownew	1
disemoticons	0
template	blue_eagle
showannouncement	1
avataroncat	0
catimagepath	category_images/
showchildcaticon	1
rtewidth	450
rteheight	300
enableforumjump	1
reportmsg	1
username	1
askemail	1
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
pubwrite	0
floodprotection	0
mailmod	0
mailadmin	0
captcha	0
mailfull	1
allowavatarupload	1
allowavatargallery	0
avatarquality	65
avatarsize	2048
imageheight	800
imagewidth	800
imagesize	1500
filetypes	txt,rtf,pdf,zip,tar.gz,tgz,tar.bz2
filesize	120
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	1
showvideotag	1
showebaytag	1
trimlongurls	1
trimlongurlsfront	40
trimlongurlsback	20
autoembedyoutube	1
autoembedebay	1
ebaylanguagecode	en-us
sessiontimeout	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
defaultpage	recent
default_sort	asc
sef	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
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
boxghostmessage	0
userdeletetmessage	2
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	0
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	1
show_imgfiles_manage_profile	1
hold_newusers_posts	0
hold_guest_posts	0
attachment_limit	8
pickup_category	0
article_display	intro
send_emails	1
fallback_english	1
cache	1
cache_time	120
iptracking	1
rss_feedburner_url
autolink	1
access_component	0
statslink_allowed	1
superadmin_userlist	0
userlist_usertype	0
sefutf8	0
enablepdf	1
jmambot	0
annmodid	62
changename	0
userlist_username	1
rules_infb	1
help_infb	1
onlineusers	1

| Kunena integration settings:

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Kunena - AlphaUserPoints Enabled: activity=1 avatar=1 profile=1 activity_points_limit=0
Kunena - Community Builder Enabled: access=1 login=1 activity=1 avatar=1 profile=1 private=1
Kunena - Gravatar Disabled
Kunena - JomSocial Enabled: access=1 login=1 activity=1 avatar=1 profile=1 private=1 activity_points_limit=0 activity_stream_limit=0
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)
it-IT	Italian (IT)

Third-party components: UddeIM 3.2

Third-party SEF components: None

Plugins: None

Modules: Kunena Latest 3.0.1

sozzled wrote: I am sorry that the Kunena developers do not seem to have an answer for you. My suggestion is to set your forum integration plugins to the values shown in red below:

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

Secondly, your configuration report shows that you are using K 3.0.3. This version is old, outdated and unsupported. My advice is that you upgrade to K 3.0.6 and then see if you are still having this problem.