Hi Steve,

 Thanks for the suggestion! I tried that and while it did not succeed it
gave me an idea of what went wrong last time since it complained about lack
of disk space. I have *not* run the /layout but now that I checked I indeed
had core_d.msi and core_pdb.msi (and a few more) in the Downloads
directory, so I think maybe the installer tried to download them but ran
out of space and the download was incomplete.

Another possibility is that the .msi was for the wrong installer - I first
tried installing the x86 version but later changed my mind but since I did
not expect it to download extra files into the same directory I did not
clean them. Also it seems the downloaded .msi files have the original
timestamp (16-09-27) so I did not notice them when sorting my downloads by
date until I tried to look for .msi files specifically.

In the end I guess this could be closed as PEBKAC but I think maybe some
more testing in low-disk-space conditions and/or installing x86 then x64
from the same directory could uncover some real issues.

In general, I found the 3.3 install experience not very straightforward
compared to 2.7 - I expected that the installer contains everything
necessary (since I did *not* pick "webinstall" one) and won't download
extra files (with the exception of the PDB option which did say
"download"). If the .msi files came from the .exe itself, I'd expect them
to be extracted into a unique temporary directory and not next to the exe.

I will work on freeing some space and then try again.

> Steve Dower <steve.dower@python.org> added the comment:
>
> Can you try moving the installer exe to its own (empty) directory before
> running it?
>