Solved K 3.0 successfully installed on J! 2.5.11, but all pages to access component blank

Found.
Link how to diagnose errors in Kunena
www.kunena.org/docs/How_to_diagnose_blank_page_on_kunena

Link on script to collect information about your site where kunena doesn't work (works for Kunena 3.0)
www.kunena.org/docs/K_1.6_Configuration_Report
1. Copy fpa-en.php in root of site
2. Open browser and type: mysite.com/fpa-en.php

My results below:

Let me make this really simple for you:

How to obtain your Kunena configuration report for K 3.0: Read the article K 3.0 Configuration Report or watch the video ( vimeo.com/69818669 ) which explains, step by step, what you have to do

If you cannot obtain the Kunena configuration report from your site then it is because the installation of Kunena on your site was not successful (even if the installation procedure displayed a message otherwise). So, you now have the problem: what to do with an unsuccessful or corrupted installation of computer software? The standard remedy as we all know is (a) to revert (if you can) to the situation you previously had when everything was working properly and (b) to retrace your steps.

We cannot diagnose the problems for you if your website is accessible on a local [LAN-restricted] PC-based server environment. We can guide you, perhaps, but the diagnosis is something you have to do yourself. Please read again what I wrote to you in msg #2 of this topic and, in particular, the links I included in that message.

Diagnosing "blank pages"? Enable Kunena and Joomla debug mode.

Thank you for the trouble you went in getting that "report" you gave us but, really, the Kunena configuration report is all we need. You seem to be using K 3.0.0. I suggest you use K 3.0.1.

I have enabled all possible error reporting cases following debug instructions.
I can't install kunena 3.0.1 with the errors on screenshot.
Problems with schema.php file.

Finally I was able to install Kunena 3.0.1 pkg from tmp folder.
But now see another problem: all itmes in Kunena admin panel displayed with programming language names :


Configuration report attached.

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: 30 seconds | Max execution memory: 128M | Max file upload: 2M

Kunena menu details:

Warning: Spoiler!

ID	Name	Menutype	Link	Path
632	Форум	kunenamenu	view=home&defaultmenu=634	forum
633	Оглавление	kunenamenu	view=category&layout=list	forum/index
634	Последнее	kunenamenu	view=topics&mode=replies	forum/recent
635	Новая тема	kunenamenu	view=topic&layout=create	forum/newtopic
636	Без ответов	kunenamenu	view=topics&mode=noreplies	forum/noreplies
637	Мои темы	kunenamenu	view=topics&layout=user&mode=default	forum/mylatest
638	Профиль	kunenamenu	view=user	forum/profile
639	Помощь	kunenamenu	view=misc	forum/help
640	Поиск	kunenamenu	view=search	forum/search
641	Форум	main	Itemid=632	kunena-2013-07-13

Joomla default template details : AllRusty-FJT | author: FJT | version: 1.7.0 | 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	1
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	0
catimagepath	category_images
showchildcaticon	1
rtewidth	450
rteheight	300
enableforumjump	1
reportmsg	1
username	1
askemail	0
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
pubwrite	0
floodprotection	0
mailmod	0
mailadmin	0
captcha	0
mailfull	1
allowavatarupload	1
allowavatargallery	1
avatarquality	75
avatarsize	2048
imageheight	800
imagewidth	800
imagesize	150
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	1
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	1
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	0
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	1
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	1
thankyou_max	10
email_recipient_count	0
email_recipient_privacy	bcc
captcha_post_limit	0
keywords	1
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	60
iptracking	1
rss_feedburner_url
autolink	1
access_component	1

| Kunena integration settings:

Warning: Spoiler!

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 Disabled

| Joomla! detailed language files installed:

Warning: Spoiler!

Joomla! languages installed:
en-GB	English (United Kingdom)
ru-RU	Russian

Third-party components: CommunityBuilder 1.9 | UddeIM 3.0

Third-party SEF components: None

Plugins: None

Modules: None

I have found the problem.
I am using russian language.
I have installed russian translation for kunena and now it displays fine.
Uuuh.
I am happy now. Thank you for assistance.