We have discussed the upper/lower case issue in the past, and I may even find this thread somewhere. In any case, back then you said that it all stems from Terragen not recognizing the case in naming and Windows recognizing this. Or the other way round. In any case, this was what prevented me from gathering the project before.
Hmm... ok, if I have more time I will try to manually gather the assets. There is a ton of Xfrog however and I'm not sure if I can pack that up.