The following is what I posted to find out if it was me or the Program. So if it is a bug, how do we get someone at AutoDesk to resolve the problem?
My students (and Me) have experienced a problem when creating a simple toposurface. We can start and work our way through the entire process, but when we pick on the "Green Check", to finish the surface, the program just crashes... sometimes with an error message / Fatal Error... sometimes just shutting down and closing without warning. I haven't experienced this with any of the earlier versions of REVIT. We can do a small portion of the toposurface, finish it, save the file, re-open the surface and add a little more and repeat the process until complete... but it shouldn't be this way. HELP
Latest service pack fixes this problem for me.
Make sure you have it installed.
Although I am still a bit paranoid of losing my work so I click finish several times and save rather than doing the topo surface all at once like i previous versions.