UMG Error: copy and pasting basic widgets within any widget blueprints results in an error message

Hi,

  • I am running UE4.21.

I am getting the following UMG error if I copy and paste any component of a widget, even within a the same (new) widget bp.

/-------------------------------------------------------------------------------
You do not have sufficient permission to save the following content to disk. Any changes you make to this content will only apply during the current editor session.

/Engine/UMG/Editor/Transient
/--------------------------------------------------------------------------------

  • This happens even with basic components such as a blank canvas panel.
  • I am not running multiple instances of UE4.

Should I run verify engine within the epic games app as it ‘looks’ like an engine issue.

Despite its message, I can save afterwards and it does actually save properly - but I am wary of this message.

This message pops up just before the 1st paste operation is complete

I have attached a screenshot showing said error.