I means that some plugin has switched the blog during saving but before broadcasting. What plugins are activated that could cause such a problem?
Does this info help?
2015-10-21 11:47:11 ThreeWP_Broadcast: Queue: Starting prepare_meta_box.
2015-10-21 11:47:11 ThreeWP_Broadcast: Queue: Preparing item cache.
2015-10-21 11:47:11 ThreeWP_Broadcast: Queue: Build process data.
2015-10-21 11:47:11 ThreeWP_Broadcast: Queue: Built process data.
2015-10-21 11:47:11 ThreeWP_Broadcast: Queue: Finished prepare_meta_box.
Debug info
High enough role to link: yes
Post supports custom fields: yes
Post supports thumbnails: yes
High enough role to broadcast custom fields: yes
High enough role to broadcast taxonomies: yes
Blogs available to user: 58
Plugins that have hooked into save_post:
delete_get_calendar_cache
NBT_Lock_Posts
custom_post_type_page_template
DWLS_Util::updateFirstImagePostmeta
DojoDigitalHideTitle
PluginOrganizer
secondary_title_edit_post
SmartcatTeamPlugin
WPFront_User_Role_Editor_Post_Permissions
WPFront_User_Role_Editor_Page_Permissions
VaultPress
ShareaholicAdmin::save_post
WPEx
Meow_MediaFileRenamer
URE_Content_View_Restrictions
wptouch_page_template_save
wpseo_invalidate_sitemap_cache_on_save_post
wpex_save_data_post
wpex_save_data_page
WP_Widget_Recent_Posts
WPFront_User_Role_Editor_Custom_Post_Permissions
EF_Editorial_Metadata
MLAData::mla_save_post_action
the_champ_save_sharing_meta
wpmem_block_meta_save
DS_Public_Post_Preview::register_public_preview
postindexeradmin
SwiftypePlugin
threewp_broadcast\ThreeWP_Broadcast
threewp_broadcast\ThreeWP_Broadcast
Post_Type_Switcher
Queue ready.
Custom Field Attachments
The custom fields in bold should specify attachment IDs:
_dwls_first_image
sc_member_order
_edit_lock
_edit_last
_secondary_title
ure_prohibit_allow_flag
ure_content_for_roles
_mobile_page_template
wpex_post_layout
wpex_page_disable_heading
wpex_page_featured_img_overlay
_the_champ_meta
_yoast_wpseo_focuskw
_yoast_wpseo_metadesc
nbt_block_post
_yoast_wpseo_linkdex
That’s a really long list of plugins. I guess the only way to figure out why it doesn’t work anymore is to disable the plugins one by one and try to publish the post each time.
Also, disable the queue plugin so that it doesn’t make debugging more difficult.