Notice: Undefined offset: 2 in _hierarchical_select_hierarchy_generate() on line 1814

I have new error in line 1814

Notice: Undefined offset: 2 in _hierarchical_select_hierarchy_generate() (line 1814 of .../sites/all/modules/hierarchical_select/hierarchical_select.module).
Notice: Array to string conversion in format_string() (line 1546 of .../includes/bootstrap.inc).

php -v
PHP 5.5.7 (cli) (built: Dec 13 2013 15:59:26)
Copyright (c) 1997-2013 The PHP Group
Zend Engine v2.5.0, Copyright (c) 1998-2013 Zend Technologies
with Xdebug v2.2.3, Copyright (c) 2002-2013, by Derick Rethans

drush pm-list --type=Module --status=enabled
Package Name Version
Administration Module filter (module_filter) 7.x-2.0-alpha2
Chaos tool suite Chaos tools (ctools) 7.x-1.3
Chaos tool suite Chaos Tools (CTools) AJAX Example (ctools_ajax_sample) 7.x-1.3
Chaos tool suite Views content panes (views_content) 7.x-1.3
Core Block (block) 7.26
Core Blog (blog) 7.26
Core Book (book) 7.26
Core Color (color) 7.26
Core Comment (comment) 7.26
Core Contact (contact) 7.26
Core Contextual links (contextual) 7.26
Core Dashboard (dashboard) 7.26
Core Database logging (dblog) 7.26
Core Field (field) 7.26
Core Field SQL storage (field_sql_storage) 7.26
Core Field UI (field_ui) 7.26
Core File (file) 7.26
Core Filter (filter) 7.26
Core Forum (forum) 7.26
Core Help (help) 7.26
Core Image (image) 7.26
Core List (list) 7.26
Core Locale (locale) 7.26
Core Menu (menu) 7.26
Core Node (node) 7.26
Core Number (number) 7.26
Core Options (options) 7.26
Core Overlay (overlay) 7.26
Core Path (path) 7.26
Core PHP filter (php) 7.26
Core Search (search) 7.26
Core Shortcut (shortcut) 7.26
Core Syslog (syslog) 7.26
Core System (system) 7.26
Core Taxonomy (taxonomy) 7.26
Core Text (text) 7.26
Core Toolbar (toolbar) 7.26
Core Tracker (tracker) 7.26
Core Trigger (trigger) 7.26
Core Update manager (update) 7.26
Core User (user) 7.26
Feeds TB RSS Feed (tb_rss_feed) 7.x-1.x-dev
Feeds TB Social Feed (tb_social_feed) 7.x-1.0-beta3
Feeds TB Theme Feed (tb_theme_feed)
Feeds TB Wall Layout (tb_wall_layout)
Fields Link (link) 7.x-1.2
Fields Vimeo Link Formatter (vimeo_link_formatter) 7.x-1.1
Fields YouTube Field (youtube) 7.x-1.1
Form Elements Hierarchical Select (hierarchical_select) 7.x-3.0-alpha7+1-dev
Form Elements Hierarchical Select Flat List (hs_flatlist) 7.x-3.0-alpha7+1-dev
Form Elements Hierarchical Select Menu (hs_menu) 7.x-3.0-alpha7+1-dev
Form Elements Hierarchical Select Small Hierarchy (hs_smallhierarchy) 7.x-3.0-alpha7+1-dev
Form Elements Hierarchical Select Taxonomy (hs_taxonomy) 7.x-3.0-alpha7+1-dev
Form Elements Hierarchical Select Taxonomy Views (hs_taxonomy_views) 7.x-3.0-alpha7+1-dev
Locale Locale Cookie (locale_cookie) 7.x-1.0
Meta tags (quick) Extra functionality (metatags_quick_extra) 7.x-2.7
Meta tags (quick) Meta tags (quick) (metatags_quick) 7.x-2.7
Meta tags (quick) Upgrade from nodewords (metatags_quick_import) 7.x-2.7
Multilingual Localization client (l10n_client) 7.x-1.3
Multilingual Localization update (l10n_update) 7.x-1.0-beta3
Multilingual - Internationalization Internationalization (i18n) 7.x-1.10
Multilingual - Internationalization Internationalization - Frontpage (i18n_frontpage) 7.x-1.0
Multilingual - Internationalization Language Cookie (language_cookie) 7.x-1.8
Multilingual - Internationalization Language icons (languageicons) 7.x-1.0
Other Advanced help (advanced_help) 7.x-1.1
Other Libraries (libraries) 7.x-2.1
Other Memcache Status (memcache_status) 7.x-1.2
Other Modal forms (modal_forms) 7.x-1.2
Other Pathauto (pathauto) 7.x-1.2
Other Token (token) 7.x-1.5
Performance and scalability Memcache (memcache) 7.x-1.0
Performance and scalability Memcache Admin (memcache_admin) 7.x-1.0
Sharing ShareThis (sharethis) 7.x-2.5
Taxonomy menu Taxonomy menu (taxonomy_menu) 7.x-1.4
User interface CKEditor (ckeditor) 7.x-1.13
User interface Gallery Formatter (galleryformatter) 7.x-1.3
User interface Lightbox2 (lightbox2) 7.x-1.0-beta1
User interface Superfish (superfish) 7.x-1.9
Variable Variable (variable) 7.x-2.4
Views Views (views) 7.x-3.7
Views Views Infinite Scroll (views_infinite_scroll) 7.x-1.1
Views Views UI (views_ui) 7.x-3.7