Runtime Error in component "EnsEMBL::Web::Component::Location::NavigateHomology [content]"

Function EnsEMBL::Web::Component::Location::NavigateHomology fails to execute due to the following error:

	Can't locate object method "start" via package "Bio::EnsEMBL::ArchiveStableId" at
	... /nfs/public/ro/ensweb/live/plants/www_114/ensembl-webcode/modules/EnsEMBL/Web/Object/Gene.pm line 513.