Fatal error: Call to undefined function context_get() I got an error after trying to update two modules: 


  Fatal error: Call to undefined function context_get() in
  sites/all/modules/context/context_ui/context_ui.module on line 422


Also: 

An AJAX HTTP error occurred. HTTP Result Code: 200 Debugging information follows. Path: http://redneckrampage.ee/authorize.php?batch=1&amp;render=overlay&amp;id=78&amp;op=do StatusText: OK ResponseText: Fatal error: Call to undefined function context_get() in sites/all/modules/context/context_ui/context_ui.module on line 422


Any ideas on how to fix this without deleting/renaming the module folder on the server?

Drupal version 7.22
Try installing Context module and if this does not solve, also also try installing the spaces module.