I'm trying to download 'Inverness TMD' Class 37 (37025) from the download station. I have downloaded the file and it is appearing in the list of locos in Surveyor. But, when I go to place the train, it doesn't appear on the track. When I go into Content Manager I says that it is missing an unknown 'Asset KUID'. How do I find this and get the damn thing to work?!