Invalid argument supplied for foreach() in libraries_prepare_files() (line 240 of modules/libraries/libraries.module).

Hey guys,

I realize it'll be a while before the bugs are shaken out of Drupal 8 but I've been tinkering with some D8 module development and I discovered this warning when I invoke the libraries_info() function in my module.

It's a simple module and here's the basics of the .module file:

function mymodule_libraries_info() {	
  $libraries['mylibrary'] = array(
    'name' => 'My Library',
    'vendor url' => 'http://www.example.com',
    'download url' => 'http://www.example.com/downloads/',
    'version' => '2.05', 
    'files' => array(
        'js' => '/js/myjs.js',
	'css' => '/css/mycss.css',
    ),
  );
	  
	  return $libraries;
	
}

function mymodule_page_build(&$page) {
  	
	
  $path = libraries_get_path('mylibrary');

  $mylibrary = libraries_info('mylibrary'); // CAUSES THE WARNING
    
  $mylibrary_js = $path . $mylibrary['files']['js'];
  $mylibrary_css = $path . $mylibrary['files']['css'];
  
  $page['#attached']['js'][$mylibrary_js] = array('every_page' => TRUE);
  $page['#attached']['css'][$mylibrary_css] = array('every_page' => TRUE); 
  
  
}

The module works without any problem and I can see from spitting out the libraries objects that the libraries api is working too. It's just that warning that is showing up.

I'll see if I can find out what's going on and post back but I thought I would post a bug report in case someone else runs into the same issue.

Andrew

EDIT: I forgot to post the specifics of my Drupal 8 version etc....

8.0-dev (2013-9-27)
Libraries API 8.x-3.x-dev (2013-9-30)
PHP 5.4.12
MYSQL 5.1.67