Drupal gives `Notice: Undefined index: highlighted in include ..` error during theme creation So, I have a fresh instal of Drupal 7.34 and decide to create a simple theme. 

I created a folder in /sites/all/themes/samayo and in it, I placed a screenshot.png, style.css, samayo.info inside samayo.info I pasted these settings. 

name = samayo
description = samayo theme
version = 0.2.1
core = 7.x
engine = phptemplate

screenshot = screenshot.png

regions[left] = Left sidebar
regions[right] = Right sidebar
regions[content] = Content
regions[header] = Header
regions[footer] = Footer
regions[footer_content_1] = Footer Content 1
regions[footer_content_2] = Footer Content 2
regions[footer_content_3] = Footer Content 3

stylesheets[all][] = style.css


Went to drupa and chose this them as default, and I am getting this error for the past 2 hours. 

Notice: Undefined index: highlighted in include() (line 126 of /var/www/public/dev.samayo/modules/system/page.tpl.php).
Notice: Undefined index: sidebar_first in include() (line 138 of /var/www/public/dev.samayo/modules/system/page.tpl.php).
Notice: Undefined index: sidebar_second in include() (line 144 of /var/www/public/dev.samayo/modules/system/page.tpl.php).
Warning: include_once(/var/www/public/dev.samayo): failed to open stream: No such file or directory in _drupal_theme_initialize() (line 209 of /var/www/public/dev.samayo/includes/theme.inc).
Warning: include_once(): Failed opening '/var/www/public/dev.samayo/' for inclusion (include_path='.:/usr/share/pear:/usr/share/php') in _drupal_theme_initialize() (line 209 of /var/www/public/dev.samayo/includes/theme.inc).


All the answer I checked do not seem to affect anything, including this which suggested placing 

regions[highlighted] = Highlighted


in the samayo.info file, but even this could not change anything.
this is probably stemming from the default page.tpl.php which is expecting to find a region highlighted.  The best approach IMHO would be to create a custom page tpl that excludes the regions you don't use, and includes the regions you do.

You can find the default page.tpl.php under modules/system - just copy the file to your theme directory (or sub folder templates) make the changes you want, and then clear the cache