I was trying to install Codoforum on a shared hosting plan, but everytime I'm trying getting "license not accepted" message after stage one.

It looks like a problem due to PHP SESSION not getting saved.

Make sure session.save_path is set and writable , you can ask your webhost regarding this issue.

So there is no problem if I try to install this script in a shared hosting plan?

So there is no problem if I try to install this script in a shared hosting plan?

Yes, there is no problem but make sure your server has PHP 5.4 or higher.

This time I'm getting another error http://coupontray.com/index.php?u=/forum/topics/general-discussions . Why this is happening.

It is because your server uses an older version of PHP .

Can you try installing Codoforum V2.4 ?

Updated PHP version now it fixed. Updated to 2.4 version but still showing you are using an older version.