Hello,
I sent an email yesterday with my code for this issue, but I just figured out what really is going wrong. If I have a conditional attached to a group, I receive the below error message. For example, if I want to show the contents of a group when a specific option from a select field is chosen, I receive an error message on the page. If the content to show/hide is not within a group, everything works fine.

Error: Warning: array_push() expects parameter 1 to be array, string given in …/wp-content/plugins/piklist/includes/class-piklist-form.php on line 2534

My Code:

  // Post Type
  piklist('field', array(
    'type' => 'select'
    ,'field' => 'post_type'
    ,'label' => 'Post Type'
    ,'value' => 'choose'
	,'columns' => 12
    ,'choices' => array(
      'choose' => '--CHOOSE POST TYPE--'
      ,'teacher' => 'Teacher Page'
      ,'standards' => 'Standards'
      ,'lesson_long' => 'Creativity Lesson'
      ,'lesson_short' => 'Skill Builder Lesson'
      ,'glossary' => 'Glossary'
    )
  ));

  // STANDARDS FIELDS
  piklist('field', array(
    'type' => 'group'
    ,'field' => 'standards'
	,'template' => 'field'
    ,'add_more' => true
    ,'label' => 'Add Section'
    ,'description' => 'To add more SECTIONS, the "+" button. Click and drag to rearrange the order.'
    ,'conditions' => array(
      array(
        'field' => 'post_type'
        ,'value' => 'standards'
      )
    )
    ,'fields' => array(
      array(
        'type' => 'text'
        ,'field' => 'section_title'
        ,'label' => 'Section Title'
        ,'columns' => 12
        ,'attributes' => array(
          'class' => 'large-text'
        )
      )
	  
      ,array(
        'type' => 'text'
        ,'field' => 'section_anchor'
        ,'label' => 'Section Anchor ID'
        ,'columns' => 12
        ,'attributes' => array(
          'class' => 'large-text'
        )
      )
      
	  ,array(
		'type' => 'editor'
		,'field' => 'section_content'
		,'label' => 'Section Content'
		,'options' => array(
			'wpautop' => true
			,'media_buttons' => true
			,'shortcode_buttons' => true
			,'tabindex' => ''
			,'editor_css' => ''
			,'editor_class' => ''
			,'teeny' => false
			,'dfw' => false
			,'tinymce' => array(
				'resize' => false
				,'wp_autoresize_on' => true
			)
			,'quicktags' => true
			,'drag_drop_upload' => true
		)
      )
	  
	  
    )
  ));

Thanks,
Shayne