Question Unable to purge trash in backend

Hey guys,
I searched for this but didn't see any related topics in K2.0... but I apologize if I overlooked something.
My mods and I can delete from the frontend, but I'm unable to purge all deleted items in the backend. I select all, click 'Purge' and it just refreshes, showing '0' for total items deleted.

Running Joomla 2.5.6
This is a migration from J1.5 and Kunena 1.7.2

How I migrated the forum:
Installed K1.7.2 on new 2.5 site, dumped database and replaced it with database from old J1.5 site.
Then upgraded to K2.0.

Everything works perfectly on the frontend and backend... except for the purge issue.

Any help would be much appreciated.

Thanks!

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

Legacy mode: Disabled | 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: 512M | Max file upload: 256M

Kunena menu details:

Warning: Spoiler!

ID	Name	Menutype	Link	Path
487	Forum	mainmenu	view=home&defaultmenu=488	forum
488	Index	mainmenu	view=category&layout=list	forum/index
489	Recent Topics	mainmenu	view=topics&layout=default&mode=replies	forum/recent
490	New Topic	mainmenu	view=topic&layout=create	forum/newtopic
491	No Replies	mainmenu	view=topics&layout=default&mode=noreplies	forum/noreplies
492	My Topics	mainmenu	view=topics&layout=user&mode=default	forum/mylatest
493	Profile	mainmenu	view=user	forum/profile
494	Rules	mainmenu	view=misc	forum/rules
495	Help	mainmenu	view=misc	forum/help
496	Search	mainmenu	view=search	forum/search

Joomla default template details : rt_ionosphere | author: RocketTheme, LLC | version: 1.3 | creationdate: April 10, 2012

Kunena default template details : SD-Radius 2.0 | author: MMG | version: 2.0 | creationdate: 2012-08-16

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

Warning: Spoiler!

Kunena config settings:
board_offline	0
enablerss	1
threads_per_page	15
messages_per_page	6
messages_per_page_search	15
showhistory	1
historylimit	10
shownew	1
disemoticons	0
template	sd_radius
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	0
allowsubscriptions	1
subscriptionschecked	0
allowfavorites	1
maxsubject	50
maxsig	75
regonly	0
changename	0
pubwrite	0
floodprotection	0
mailmod	0
mailadmin	1
captcha	0
mailfull	0
allowavatarupload	1
allowavatargallery	0
avatarquality	80
avatarsize	600
imageheight	0
imagewidth	0
imagesize	1024
filetypes	txt,pdf,zip,wav,mp3,wma,flv,mp4
filesize	20480
showranking	1
rankimages	1
userlist_rows	30
userlist_online	1
userlist_avatar	1
userlist_name	0
userlist_posts	1
userlist_karma	1
userlist_email	0
userlist_usertype	0
userlist_joindate	1
userlist_lastvisitdate	0
userlist_userhits	0
latestcategory	0,14,17,15,35,36,20,19,24,23,21,56,30,27,51,41,43,37,38,40,50,61,54,22,57,59
showstats	1
showwhoisonline	0
showgenstats	1
showpopuserstats	1
popusercount	15
showpopsubjectstats	1
popsubjectcount	15
usernamechange	0
showspoilertag	1
showvideotag	1
showebaytag	0
trimlongurls	1
trimlongurlsfront	40
trimlongurlsback	20
autoembedyoutube	1
autoembedebay	0
ebaylanguagecode	en-us
sessiontimeout	3600
highlightcode	0
rss_type	topic
rss_timelimit	week
rss_limit	10
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	0
showfileforguest	0
pollnboptions	10
pollallowvoteone	1
pollenabled	0
poppollscount	8
showpoppollstats	0
polltimebtvotes	00:15:00
pollnbvotesbyuser	1
pollresultsuserslist	0
maxpersotext	300
ordering_system	replyid
post_dateformat	datetime_today
post_dateformat_hover	datetime
hide_ip	1
imagetypes	jpg,jpeg,png
checkmimetypes	0
imagemimetypes	image/jpeg,image/jpg,image/gif,image/png
imagequality	100
thumbheight	128
thumbwidth	128
hideuserprofileinfo	put_empty
boxghostmessage	0
userdeletetmessage	1
latestcategory_in	1
topicicons	1
debug	0
catsautosubscribed	0
showbannedreason	1
version_check	0
showthankyou	1
showpopthankyoustats	0
popthankscount	8
mod_see_deleted	1
bbcode_img_secure	text
listcat_show_moderators	0
lightbox	1
show_list_time	0
show_session_type	0
show_session_starttime	60
userlist_allowed	1
userlist_count_users	0
enable_threaded_layouts	1
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	intro
send_emails	1
fallback_english	1
cache	1
cache_time	60
enablepdf	0
jmambot	0
annmodid	62
userlist_username	1
rules_infb	1
help_infb	1
onlineusers	1

| Kunena integration settings:

Warning: Spoiler!

Kunena - AlphaUserPoints Disabled
Kunena - Community Builder Disabled
Kunena - Gravatar Disabled
Kunena - JomSocial Enabled: access=1 login=1 activity=0 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 Disabled

| Joomla! detailed language files installed:

Warning: Spoiler!

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

Third-party components: Jomsocial 2.6.2

Third-party SEF components: None

Plugins: None

Modules: Kunena Latest 2.0.1

As you see, when you read the posting guide printed at the top of this page, we do not provide support on Kunena installations that use third-party Kunena templates. If are having problems with any part of Kunena when you use a third-party Kunena template, please contact first the author of that template.

Your Kunena menu is not right either.

You have defined in your integration settings, to use both Kunena avatars and JomSocial avatars. Please use one or the other; not both.

When people have problems with Kunena, we suggest that they try resetting the configuration to the original default values. This may help in your case.