This has been extremely frustrating. I installed a module Finder in Drupal installation. I was tweaking some settings in it and then after changing some settings it started showing off some Ajax errors and then there was the White Screen, showing this error:
Fatal error: Call to undefined function views_include() in /var/www/drupal/sites/all/modules/views/includes/plugins.inc on line 9
Using Drush, I disabled the Finder module and cleared the cache. But nothing happened. Then I disabled the Views module. The White Screen was now gone.
And now I am stuck. I had some pretty good work done in this site and when I re-enable the Views, White Screen reappears. It seems to me like the Finder module made some irreversible changes somewhere in Views. I mean how come my Views is not working when I’ve cleared the cache and Finder is disabled?
Has anybody ever come across such a thing in Drupal? How did you solve it?
UPDATE
I just found that the developer of the “Finder” module is claiming it to be a bug in Views. See here: http://drupal.org/node/1611106. As suggested, commenting out that particular line 9 in plugins.inc of Views module does work. However, I’m still skeptical to accept to be a bug in Views.
I just got this error too. Funny enough it was also while playing around with settings in the finder module. Playing with the ajax settings to be precise.
Anyway, to get your site back when you get the error and white screen, close your browser and reopen it a a page other than your site and clear all the browser cache. You should then be able to see your site again.
It happen to me after setting ‘Ajax’ to ‘yes’ under the form heading on the edit finder page.
After you have reopened your browser and cleared the browser cache, go straight to the edit page for the finder that is the culprit and set ‘ajax’ to ‘no’.