I downloaded the 750Mb installation for the four components w/o apparent difficulty. The installation of MiKTEX proceeded also w/o apparent difficulty. When I clicked on the link for the bat file that installs TEXnic Center, I received a message that said the system cannot find "C:\Documents". No small wonder! I don't have such a directory.
I must say that, though I have not paid for the software, I am disappointed to note this sort of problem. Alvin Hofer St Pete FL
-- http://tug.org/protext/