Drupal Themes getting "unselected"

Question

Sometimes, at least 1 time a month +-, when I visit my site, there is no theme selected and I get a lot of error code.

Notice: Undefined index: highlighted em include() (linha 120 de /var/www/novoportal.faccat.br/htdocs/portal/modules/system/page.tpl.php).
    Notice: Undefined index: sidebar_first em include() (linha 132 de /var/www/novoportal.faccat.br/htdocs/portal/modules/system/page.tpl.php).
    Notice: Undefined index: sidebar_second em include() (linha 138 de /var/www/novoportal.faccat.br/htdocs/portal/modules/system/page.tpl.php).
    Notice: Undefined index: genesis em drupal_theme_initialize() (linha 100 de /var/www/novoportal.faccat.br/htdocs/portal/includes/theme.inc).
    Notice: Trying to get property of non-object em _drupal_theme_initialize() (linha 145 de /var/www/novoportal.faccat.br/htdocs/portal/includes/theme.inc).
    Notice: Trying to get property of non-object em _theme_load_registry() (linha 321 de /var/www/novoportal.faccat.br/htdocs/portal/includes/theme.inc).
    Notice: Undefined index: genesis em theme_get_setting() (linha 1316 de /var/www/novoportal.faccat.br/htdocs/portal/includes/theme.inc).

I always need to select the theme again and clear the cache.

Also I used the Devel theme rebuild tool, but I keep getting these errors.

Any Ideas?

Answer 1

This is what I suggest:

1) First check the .info file and make sure the regions are there as per page.tpl.php. Your error is based on that .

2) If the the above is true then the next thing I would do is make a new fresh installation and only move the sites/all/themes/ folder to it and the db I would then test it to make sure the error does not occur.

Hope it helps.