I recently encountered this error “<!– #RENDER FAILED –>”.
I found the cause for it after searching and browsing various posts and comments about this error.
Well it is a bug and hasnt been fixed anyway the below are the steps/combinations that cause it.
- Calculated Field from another list is being used as Lookup Column value in your list.
- Group By the Look Up field (linked to Calculated Field in other List)
- Group Setting: Collapsed.