Kaltura red5 server is not starting

Jess,
Thank you for your quick response.

Regarding 'kaltlog'
I am not sure how can I see the log details I tried the command like below

sudo kaltlog
sudo: kaltlog: command not found

Regarding Red5 error
I will send error details to maintainer

Regarding Debugging step
I have edited the file "/var/lib/dpkg/info/red5-serve.postinst" and run the test, then I got the output like below.

sudo dpkg-reconfigure red5-server
 * Stopping Flash streaming server 

red5-server                                                     [ OK ] 
+ set -e
+ DAEMONUSER=_red5
+ DAEMON=/usr/share/red5/red5.sh
+ id _red5
+ chown -R _red5:nogroup /var/log/red5 /var/cache/red5
+ chown -R _red5:adm /etc/red5
+ chown _red5:adm /var/log/red5 /var/cache/red5
+ chmod -R 770 /etc/red5
+ chmod 750 /var/log/red5 /etc/red5
+ chmod 700 /var/cache/red5
+ [ -x /etc/init.d/red5-server ]
+ [ ! -e /etc/init/red5-server.conf ]
+ update-rc.d red5-server defaults
+ invoke-rc.d red5-server start
 * Starting Flash streaming server  red5-server                                                    [fail] 
invoke-rc.d: initscript red5-server, action "start" failed.
+ exit 1

Currently I am trying to make KMC working, I am not sure why I am getting blank page after signing in. I am listing the KMC issue in step by step

1) When we try to load KMC by http://hostname/kmc, it will display a login screen, there is no network error shown in inspect element.

2) I logged in as default root user, then it is redirecting to https, so the URL would be https://dipu-virtualbox/index.php/kmc/kmc2

3) I changed it to http(manually), then we can see browser redirecting to URL http://dipu-virtualbox/index.php/kmc/kmc1(with some query string)

4) In the new page we could see menu "Dashboard", "Content", etc...
but the main content area remain blank. Also it shows a JS error in console 'Uncaught SyntaxError: Unexpected token <'

5) If you click any of those menu("Dashboard", "Content") then it will throw a JS error "Uncaught ReferenceError: loadModule is not defined"

6) If you click on Logout, then it will throw another JS error "Uncaught ReferenceError: logout is not defined"

I am listing screen shots below.

redirected_to_https_after_login.png1024x768 127 KB

login_screen.png1024x768 136 KB

when_click_on_logout.png1024x768 132 KB