You need DLC wich are listed here is the DLC for this to work Wight (Steam), West Somerset Railway (Steam),The VDL From https://backdatedtrainsim.weebly.com/virtual-district-line.html, The Stroudley A1/A1X Terrier (Steam), GWR Large Prairies (Steam) , AP British rail class 313 both packs from (steam) and The Weardale And Teesdale Network (Steam).
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There Are 2x45minutes scenarios in this pack in total there 90 minutes of scenarios in this pack.