Can't get short codes to work with this theme

Is there something in this theme that blocks short codes from working? I installed this theme to replace another. I was using the plugin Easy Columns/WP Easy Columns to make columns on pages. With the Harrington theme, that plugin will not work. Gives error messages:

Notice: has_cap was called with an argument that is deprecated since version 2.0! Usage of user levels by plugins and themes is deprecated. Use roles and capabilities instead. in /home/dvscadmin/public_html/wp-includes/functions.php on line 3842

Warning: Cannot modify header information - headers already sent by (output started at /home/dvscadmin/public_html/wp-includes/functions.php:3842) in /home/dvscadmin/public_html/wp-includes/pluggable.php on line 1167

Notice: Undefined property: EasyColumns::$use_custom in /home/dvscadmin/public_html/wp-content/plugins/easy-columns/easy-columns.php on line 233

So I uninstalled that plugin and tried 2 others:

Column Shortcodes By Codepress
Columns By Konstantin Kovshenin

On this page, the short codes are making the content into 1 column, and the 2nd column of text has disappeared:
http://dev.dfwvetsurgeons.com/about/associates/4126-2/

The short codes appear on the pages as text, not as code:
http://dev.dfwvetsurgeons.com/about/associates/doctors-2004-05/

My preference is to use Easy Columns/WP Easy Columns plugin because then all the pages that are using the short codes for this plugin will automatically work and the layout will resolve itself once the plugin is installed and working properly. But right now whenever I install that plugin it gives errors:

Notice: Undefined property: EasyColumns::$use_custom in /home/dvscadmin/public_html/wp-content/plugins/easy-columns/easy-columns.php on line 233

However, using Easy Columns, the page layout is correct:
http://dev.dfwvetsurgeons.com/about/associates/doctors-2005-06/

 

I need to update this post. I installed a different plugin that uses short codes, WP Sitemap Page. That short code worked fine. Just the short codes specifying Columns do not seem to work. Still having issues creating columns on the pages regardless of what plugin I try.

 

Hi,

I have replied you at https://www.inkthemes.com/community/threads/how-to-create-columns-on-a-page-layout.20726/ link..

Thanks & Regards!
Priyanka
InkThemes.com

 

OK thank you I will check that.