I discovered tonight that the program first builds a complete directory tree in memory of the hard drive(s) on the computer. I noted this as I had spent about five hours cleaning off old non-used programs prior to installing T2010, and the right number when if finally got to the "Scanning for Modified Asset Files xxxx/19876" (with xxx being the incrementing number as it scans) closely matched the total folder count before I installed Trainz 2010.
As a programmer, I don't think that this is the most efficient way of doing things, but hey, in Australia maybe things do run different :hehe:.