EntityFieldQueryException: Unknown field: field_size_price in EntityFieldQuery->addFieldCondition() (line 765 of /var/www/vhosts/httpdocs/includes/entity.inc).

I also then get an error on views with the collection:
See attached pic

Adding a blank field collection with the same machine name fixes it

Files: 
CommentFileSizeAuthor
field collection views.png29.72 KBnicxvan

Comments

I can confirm this issue.

Work Around:

  1. Delete all records from the following tables where field_name equals the_fc_machine_name:
    • field_collection_item
    • field_config
    • field_config_instance

I had removed all fields from the field collection before I deleted the collection itself so I'm not certain that the above actions are all that needs to be done to stop the error from being thrown on field delete.