My installation stops and I get the following message: "vcredist_x86.exe returned error code 1638"
ProSeries support offered this workaround:
1.  Click Add or Remove programs
2.  Find and select Microsoft Visual C++ 2015 Redistributable (x64).  Click Change button.
3.  Click repair button
I do not have that file on my computer, but do have identical files with different year dates on them.
This fix also says its for servers, and I'm installed on a stand alone computer.