Important Upgrade to 1.6.3 and now we can not add or edit categories

We upgraded to 1.6.3 recently and one of the folks attempted to add a new category but upon clicking the Save button we get this error. We also try editing and category and get the same.

TableKunenaCategory::store failed - Duplicate entry '0' for key 1 SQL=INSERT INTO `jos_kunena_categories` ( `id`,`parent`,`name`,`locked`,`moderated`,`ordering`,`review`,`allow_anonymous`,`post_anonymous`,`description`,`headerdesc`,`class_sfx`,`allow_polls` ) VALUES ( '','10','test','0','1','9999','0','0','0','','','','0' )

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Here is the report configuration
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Database collation check: The collation of your table fields are correct

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

This message contains confidential information

htaccess: Missing | PHP environment: Max execution time: 600 seconds | Max execution memory: 1024M | Max file upload: 768M

Joomla default template details : rt_hivemind_j15 | author: RocketTheme | version: 1.5.3 | creationdate: 01/31/08

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	MQM Wiki 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	20
messages_per_page	6
messages_per_page_search	15
showhistory	1
historylimit	6
shownew	1
jmambot	1
disemoticons	1
template	default
showannouncement	0
avataroncat	0
catimagepath	category_images/
showchildcaticon	1
annmodid	62
rtewidth	450
rteheight	300
enableforumjump	1
reportmsg	1
username	1
askemail	0
showemail	0
showuserstats	0
showkarma	0
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	0
allowavatargallery	0
avatarquality	65
avatarsize	2048
allowimageupload	0
allowimageregupload	1
imageheight	800
imagewidth	800
imagesize	150
allowfileupload	0
allowfileregupload	1
filetypes	zip,txt,doc,gz,tgz,bmp,csv,doc,epg,gif,ico,jpg,odg,odp,ods,odt,pdf,png,ppt,swf,txt,xcf,xls,BMP,CSV,DOC,EPG,GIF,ICO,JPG,ODG,ODP,ODS,ODT,PDF,PNG,PPT,SWF,TXT,XCF,XLS
filesize	11534336
showranking	0
rankimages	0
avatar_src	fb
fb_profile
pm_component
userlist_rows	30
userlist_online	0
userlist_avatar	0
userlist_name	0
userlist_username	1
userlist_posts	0
userlist_karma	0
userlist_email	0
userlist_usertype	0
userlist_joindate	0
userlist_lastvisitdate	0
userlist_userhits	0
latestcategory	0,0
showstats	0
showwhoisonline	0
showgenstats	0
showpopuserstats	0
popusercount	5
showpopsubjectstats	1
popsubjectcount	5
usernamechange	0
rules_infb	0
rules_cid	1
help_infb	0
help_cid	1
showspoilertag	0
showvideotag	0
showebaytag	0
trimlongurls	1
trimlongurlsfront	40
trimlongurlsback	20
autoembedyoutube	0
autoembedebay	0
ebaylanguagecode	en-us
fbsessiontimeout	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
fbdefaultpage	categories
default_sort	asc
alphauserpointsnumchars	0
sef	1
sefcats	1
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	joomla
integration_login	joomla
integration_avatar	none
integration_profile	none
integration_private	none
integration_activity	none
boxghostmessage	0
userdeletetmessage	0
latestcategory_in	1
topicicons	1
onlineusers	0
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: Disabled or not installed | UddeIm: Disabled or not installed

Third-party SEF components: sh404sef: Disabled or not installed | ARTIO JoomSEF: Disabled or not installed | AceSEF: Disabled or not installed

Plugins: System - Mootools12: Disabled | System - Mootools Upgrade: Disabled | 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

G'day, sorr, and welcome to Kunena.

Duplicate entry - sounds like a database indexing issue. You may need to rebuild your Joomla table indexes.

Please read the very important information about using legacy mode . For your sake, eliminate your dependence on legacy mode.

Please check that primary key = id in that table. Missing indexes is very common problem if you come from J1.0 (migration breaks kunena tables).

Check table integrity from:
/administrator/index.php?option=com_kunena&view=install&layout=schema

If Schema Difference (xml) has more than few lines, your database differs from what it should be.