strlen() expects parameter 1 to be string, array given in (...)includes/bootstrap.inc line 891

same here

I can confirm this error.

I can also confirm.

This error is only present in the -dev version of Geocoder. To fix this, I rolled back to alpha5 and then applied the patches which resolved other bugs (for instance, this one - http://drupal.org/node/1074436#comment-4540882). Now I have a working version of Geocoder without errors on node submit. Attached is the final result. Please, use with care and for testing only!

It is geocoder cause this and I also get:
warning: preg_match() expects parameter 2 to be string, array given in /var/www/includes/bootstrap.inc on line 895

With backtrace on:

notice: Undefined index: description in content_field_form() (line 101 of /var/www/sites/all/modules/cck/includes/content.node_form.inc). =>
Called from /var/www/sites/all/modules/cck/includes/content.node_form.inc, line 101  

notice: Array to string conversion in strlen() (line 891 of /var/www/includes/bootstrap.inc). =>

warning: preg_match() expects parameter 2 to be string, array given in preg_match() (line 895 of /var/www/includes/bootstrap.inc). =>

Any of you that sees this got location/i18n or just changed the default language to non English?

found the reason why the bug shows.

in the function "openlayers_geocoder_widget" in openlayers_geocoder.module

comment out: unset($field['widget']['description']);

The error is than gone!

This duplicate of #1096642: Undefined index 'description', error in drupal_validate_utf8()

Clarified that the other content type is without Openlayers Geocoder fields.