Got it.  I loaded it up and was working through a tut at DT and it white screened on me.

The teacher did say that Silo doesn't use resources well and it is not Mudbox or ZB.

I tried again with resource monitors.  Lots of page faults prior to crash.

Have two E5 2630 CPU's, win 7 ultimate, 64gram, GTX 780.  No reason for any app to run out of resources.

I noticed that silo used about 1/4 of the cpu capability during modeling and very little ram while it was building page faults.

From what I can tell, this app is robust when it comes to basic tools and custom interface.  Not quite there yet for a pro modeling app, but does combine some scultping and poly tools in ways that many pro apps don't.  If they fix the machine language, this app might do very well.

Eric