I always use browser download for the installs (so don't suggest any other technique).
When I go to the page to download using browser it specifically states to start the install with the EXE after downloading Part 1 and Part 2. Both of the download files, Part 1 and Part 2 end in EXE however.
The page itself seems to be poorly laid out (note the File Size:3.94 GB text).
I naturally assume that the Part 1 exe is the file to use to start the install process, but after a bit of time I get an error that it is looking for Part 2.rar which doesn't exist from the download. (as noted - Part 2 download is an exe extension)
i also noticed in the file name from the screen shot it says preRC
it should say Autodesk_Inventor_2014_Eng_64bit_dlm_001_002.sfx.e
hopefully autodesk didn't upload the pre release of inventor to the student site
The silence here is deafening.
I downloaded the install from another site (subscription) and it downloaded as one file (with name 001 and 002) and installed fine with my student serial number.