Have you looked at other mods that you play with in conjunction with TrainCraft for the item ID? It may be that the ID you are having trouble with is probably a space-holder ID for another block or item to work properly, but it's been a long time since I've even played MineCraft. The 1.6.4 version of Forge doesn't work anymores for me, so I'm waiting for the 1.7.10 version of TrainCraft. Heh, I reckon you could say it came down with the vapors.
Edit 1: You could probably re-download the version of TC you play with.