Why does CiviCRM render a validation failure without the Wordpress theme?

Question

I have a wordpress site http://logisticsworkersnetwork.org/

There is a 'profile' sign-up form on the front page. The sign-up form works fine but there is no CSS or theme html when someone makes a mistake on the form. It goes to this page: http://logisticsworkersnetwork.org/?page=CiviCRM&q=civicrm/profile/create&page_id=2 and just shows the error and the form in pure html. That is, it shows the PRINTER-FRIENDLY version of the page. The console error says:

Uncaught ReferenceError: CRM is not defined (anonymous function) @ ?page=CiviCRM&q=civicrm/profile/create&page_id=2:100

NB: I have removed the civiCRM CSS file with Jquery. I also have a few hidden fields which are shown when a validation error occurs. This problem only arose after I switched from my localhost environment to my server (bluehost). I upgraded to civiCRM 4.6.2 (from 4.5.8) when I uploaded the site too.

UPDATE (12/May/2015): I have tried deleting the 'templates_c' folder but it doesn't work. I have tried clearing the cache.

Answer 1

I can't add a comment (doh, stupid reputation requirement) so I'm answering when Thomas Jaunism wrote: "Why would CiviCRM be trying to load the page.php and not the front-page.php that the form is on?"

The Civi plugin loads the WordPress theme's page.php template because many (if not most) themes define a homepage template which does not contain the_content() but rather collections of widgets and archive views. Loading page.php has proved to be the most reliable way to show Civi content on the front end.

If you want Civi to load a different template, there is a filter for this called civicrm_basepage_template. You can therefore load a different template with code such as the following in your functions.php file:

add_filter( 'civicrm_basepage_template', 'use_my_own_template_for_civi' );
function use_my_own_template_for_civi( $template ) {
    if ( some condition is met ) {
        return 'your-template-name.php';
    }
    return $template;
}

Answer 2

Viewing the PHP error log revealed a PHP parse error -

[12-May-2015 04:20:05 UTC] PHP Parse error:
  syntax error, unexpected end of file, expecting function (T_FUNCTION) in
  /path/to/CRM/Profile/Form/Edit.php on line 346

We checked that the file in question Edit.php validated, which suggests that perhaps there is a mismatched bracket somewhere else in the site codebase (eg theme files or another plugin).

Recommend -

• validating files which have been recently modified (php -l *.php)
• restoring a known good copy of the CiviCRM codebase