Runtime Error in component "EnsEMBL::Web::Component::Help::View [content]"

Function EnsEMBL::Web::Component::Help::View fails to execute due to the following error:

	Can't use an undefined value as an ARRAY reference at
	... /nfs/public/ro/ensweb/live/archive/parasite/release-18/browser/eg-web-common/modules/EnsEMBL/Web/Component/
	... Help/View.pm line 25.