I'm not sure what you actually did when you say you changed the keywords - but most definitely if you start randomly renaming files then things (almost everything really) will break really quickly.

My suggestion - reinstall Elgg, then ask for advice here on the correct way to do whatever it is you're trying to do.

You can't search and replace the strings over the entire installation or rename the files because you'll get errors like the ones above. There's a document on how to correctly change wording in Elgg.

Set default access permissions to public and do not check Allow user default access in the Advanced settings page

Rodolfo Hernandez
Arvixe/Elgg Community Liaison

Do you have ssl certificates in your site? https login only works if you have ssl certificates installed in your site.

If not, do this:

http://blog.arvixe.com/how-to-recover-your-elgg-site-if-you-accidentaly-activated-ssl-login/

Rodolfo Hernandez
Arvixe/Elgg Community Liaison

thanks your tutorial worked.