Question Image insert fails - MIME type () is not allowed

I am not sure if a solution has been posted. I have spent 8 hours reading through in vain. I am able to upload and insert images in all other modules. Please assist in resolving this.

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: 300 seconds | Max execution memory: 128M | Max file upload: 8M

Kunena menu details:

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ID	Name	Menutype	Link	Path
55	Forum	kunenamenu	view=home&defaultmenu=57	forum
64	Forum	mainmenu	Itemid=55	kunenaforum
67	SWW Forum	mainmenu	view=home	sww-forum
56	Index	kunenamenu	view=category&layout=list	forum/index
57	Recent Topics	kunenamenu	view=topics&mode=replies	forum/recent
58	New Topic	kunenamenu	view=topic&layout=create	forum/newtopic
59	No Replies	kunenamenu	view=topics&mode=noreplies	forum/noreplies
60	My Topics	kunenamenu	view=topics&layout=user&mode=default	forum/mylatest
61	Profile	kunenamenu	view=user	forum/profile
62	Help	kunenamenu	view=misc	forum/help
63	Search	kunenamenu	view=search	forum/search

Joomla default template details : funlite | author: jh! design | version: 1.1 | creationdate: Jan 4 2011

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	1
threads_per_page	20
messages_per_page	8
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	1
useredit	1
useredittime	0
useredittimegrace	600
editmarkup	1
allowsubscriptions	1
subscriptionschecked	0
allowfavorites	1
maxsubject	50
maxsig	300
regonly	0
changename	0
pubwrite	0
floodprotection	10
mailmod	0
mailadmin	0
captcha	1
mailfull	1
allowavatarupload	1
allowavatargallery	1
avatarquality	75
avatarsize	2048
imageheight	600
imagewidth	600
imagesize	4096
filetypes	txt,rtf,pdf,zip,tar.gz,tgz,tar.bz2
filesize	4096
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	1
userlist_joindate	1
userlist_lastvisitdate	1
userlist_userhits	0
latestcategory	0
showstats	1
showwhoisonline	1
showgenstats	1
showpopuserstats	0
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	recent
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	0
rss_word_count	1000
rss_old_titles	1
rss_cache	900
defaultpage	recent
default_sort	desc
sef	1
sefutf8	0
showimgforguest	1
showfileforguest	1
pollnboptions	4
pollallowvoteone	1
pollenabled	1
poppollscount	5
showpoppollstats	0
polltimebtvotes	00:15:00
pollnbvotesbyuser	100
pollresultsuserslist	1
maxpersotext	50
ordering_system	mesid
post_dateformat	datetime
post_dateformat_hover	datetime
hide_ip	1
imagetypes	jpg,jpeg,gif,png
checkmimetypes	1
imagemimetypes	jpg,jpeg,gif,png
imagequality	75
thumbheight	150
thumbwidth	150
hideuserprofileinfo	put_empty
boxghostmessage	0
userdeletetmessage	2
latestcategory_in	1
topicicons	0
debug	0
catsautosubscribed	0
showbannedreason	1
version_check	1
showthankyou	1
showpopthankyoustats	0
popthankscount	5
mod_see_deleted	0
bbcode_img_secure	text
listcat_show_moderators	0
lightbox	2
show_list_time	720
show_session_type	0
show_session_starttime	0
userlist_allowed	1
userlist_count_users	0
enable_threaded_layouts	1
category_subscriptions	post
topic_subscriptions	first
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	admin
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

| Kunena integration settings:

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Kunena - AlphaUserPoints Disabled
Kunena - Community Builder Enabled: access=1 login=1 activity=1 avatar=1 profile=1 private=1
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:

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

Third-party components: CommunityBuilder 1.8.1

Third-party SEF components: None

Plugins: Content - Kunena Discuss 2.0.1

Modules: Kunena Latest 2.0.1 | Kunena Stats 2.0.1 | Kunena Login 2.0.1 | Kunena Search 2.0.1

Hello,

Kunena 2.0.1 need to have legacy mode to run correctly, you need to run at least IIS 6.0 or 7.0

xillibit is correct. Even J! 1.5.x is not fully supported on IIS 5.0 any more.

Please read all about Legacy mode <<< here

K 2.x is not tested on systems running J! 1.5.x with the System - Legacy plugin enabled. Running J! 1.5 with the System - Legacy plugin enabled is known to cause problems and we recommend that you do not use it.

Unfortunately, changing IIS is not an option for now. Have run J1.5.26 sucessfully as well as many of the popular extensions. I am running in Legacy mode but I am going to try disabling this. Thank you for your answers.