For the Relation List field type users can define a default location where users will start browsing with the universal widget. This works fine, but if the location is hidden then the Content Type editing view crashes with the message:

"Location cannot be displayed as it is flagged as invisible."

Once the object is visible again, then editing works as expected again.

Steps to reproduce:

• Install clean eZ Platform (v2.4.2)
• Create a folder in the content root with the title "Articles"
• Edit "Article" content type and add relation field (Related Articles)
• Set relation field default location to "Articles"
• Hide "Articles" folder via UI
• Edit "Article" content type
• See error