Let me see... 1. The software does not install properly on a 64 bit Vista machine. 2. I cannot load a copy on a desk top machine and a laptop, as most reasonable software companies will allow. 3. I have to pay for the next update that hopefully will install properly. 4. And the major difference between this debacle and MathCAD 13.1 is...well...the number 14. I just requested a refund for my $99 upgrade since it is worthless to me. Now I'll take a look at competitors. Too bad, PTC. You took a good product and turned it into a door stop. Frank A Tinker, Ph.D. ------- It was the "latest" upgrade (14 M020) that I got when I ordered from the web site yesterday. You would think that the "latest" would be the M030 since it is the latest; but no. Just another example of PTC incompetence.