Solved I/O warning : failed to load external entity .......\template.php on line 142 (and 1145)

Hi, I'm doing a long overdue upgrade of our community website ... (I was somewhat nervous about beginning since it was quite a trial to get everything working properly in the first place

I've made most of the website upgrade: Kunena Upgrade 1.6.2 to 4; Joomla 1.5 to 4.0. I've managed to get Kunena 4.0 working with Joomla 4 but have the following warnings that appear on the user screen as well as the admin screen:

I checked another post that suggested deleting an example file - there isn't one in my set up.

Warning: simplexml_load_file(): I/O warning : failed to load external entity "file:///C:/xamp/htdocs/Joomla3_5/components/com_kunena/template/default/template.xml" in C:\xamp\htdocs\Joomla3_5\libraries\kunena\template\template.php on line 142 (and also line 1145 of the same file).

Also
Notice: Trying to get property of non-object in C:\xamp\htdocs\Joomla3_5\administrator\components\com_kunena\models\report.php on line 240

I would be so relieved if someone could assist with these 2 problems ...

Many Thanks.
Burt

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

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

This message contains confidential information

htaccess: Missing | PHP environment: Max execution time: 30 seconds | Max execution memory: 128M | Max file upload: 16M

Kunena menu details:

Warning: Spoiler!

ID	Name	Menutype	Link	Path	In trash
119	Discussions	mainmenu	view=home&defaultmenu=101	discussions	No

Joomla default template details : beez3 | author: Angie Radtke | version: 3.1.0 | creationdate: 25 November 2009

Kunena default template details : | author: | version: | creationdate:

Kunena version detailed: Kunena 4.0.10 | 2016-02-18 [ Villavicencio ]
| 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	20
showhistory	1
historylimit	8
shownew	1
disemoticons	0
template	default
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	0
useredit	0
useredittime	0
useredittimegrace	600
editmarkup	1
allowsubscriptions	1
subscriptionschecked	1
allowfavorites	1
maxsubject	50
maxsig	300
regonly	1
pubwrite	0
floodprotection	0
mailmod	0
mailadmin	0
captcha	0
mailfull	1
allowavatarupload	1
allowavatargallery	1
avatarquality	65
avatarsize	500
imageheight	800
imagewidth	800
imagesize	1000
filetypes	txt,rtf,pdf,zip,tar.gz,tgz,tar,bz2,mp3,bmp,doc
filesize	2000
showranking	0
rankimages	0
userlist_rows	30
userlist_online	1
userlist_avatar	1
userlist_posts	1
userlist_karma	0
userlist_email	1
userlist_joindate	0
userlist_lastvisitdate	1
userlist_userhits	1
latestcategory	0
showstats	1
showwhoisonline	1
showgenstats	1
showpopuserstats	0
popusercount	5
showpopsubjectstats	1
popsubjectcount	5
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	0
pollnboptions	6
pollallowvoteone	1
pollenabled	1
poppollscount	5
showpoppollstats	1
polltimebtvotes	00:15:00
pollnbvotesbyuser	100
pollresultsuserslist	1
maxpersotext	50
ordering_system	replyid
post_dateformat	ago
post_dateformat_hover	datetime
hide_ip	1
imagetypes	jpg,jpeg,gif,png,bmp
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
showthankyou	0
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	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	60
iptracking	1
rss_feedburner_url
autolink	1
access_component	1
statslink_allowed	1
superadmin_userlist	0
legacy_urls	1
attachment_protection	0
categoryicons	1
avatarresizemethod	1
avatarcrop	0
user_report	1
searchtime	365
teaser	0
ebay_language	0
twitter_consumer_key
twitter_consumer_secret
allow_change_subject	1
max_links	6
enablepdf	1
jmambot	0
annmodid	62
changename	0
userlist_name	1
userlist_username	0
userlist_usertype	0
usernamechange	0
rules_infb	1
help_infb	1
sefutf8	0
onlineusers	1
version_check	1

| Kunena integration settings:

Warning: Spoiler!

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:

Warning: Spoiler!

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

Third-party components: None

Third-party SEF components: None

Plugins: None

Modules: None

1) Make full backup
2) Uninstall kunena by joomla backend - manage
3) check that administrator/components/com_kunena dir and components/com_kunena dir are removed
4) Install kunena again

Thanks a lot. I had to delete and re-install Kunena a couple of times - but now it all works fine.
Much Gratitude ...
Burt