brave-browser: installation sometimes failing on both dev & beta when using x86 stub installers

Description

When attempting to install either dev or beta on a x86 machine using the sub installer, the installation fails after the download has been completed. Reproducing this constantly on my Win 7 x86 VM.

Windows showing the following:

Files that help describe the problem:
  C:\Users\kjozwiak\AppData\Local\Temp\WER4F47.tmp.WERInternalMetadata.xml
  C:\Users\kjozwiak\AppData\Local\Temp\WER536D.tmp.appcompat.txt
  C:\Users\kjozwiak\AppData\Local\Temp\WER536E.tmp.mdmp
<img width="724" alt="screen shot 2018-10-16 at 3 06 32 am" src="https://user-images.githubusercontent.com/2602313/46998431-85c7ea80-d0f0-11e8-909c-0101b2ec0d45.png">

Steps to Reproduce

Test Case 1:

1. visit https://github.com/brave/brave-browser/releases/tag/v0.55.14
2. download BraveBrowserDevSetup32.exe
3. attempt installing the above executable under Win 7 x86

Test Case 2:

1. visit https://github.com/brave/brave-browser/releases/tag/v0.56.4
2. download BraveBrowserDevSetup32.exe
3. attempting installing the above executables under Win 7 x86

Actual result:

Expected result:

Should be installing on Win 7 x86 without any issues.

Reproduces how often:

100% reproducible using my Win 7 x86 machine.

Brave version (brave://version info)

Brave	0.56.4 Chromium: 70.0.3538.54 (Official Build) dev (64-bit)
Revision	4f8e578b6680574714e9ed3bb9f02922b4dde40d-refs/branch-heads/3538@{#937}
OS	Windows

Brave	0.55.14 Chromium: 70.0.3538.54 (Official Build) beta(64-bit)
Revision	4f8e578b6680574714e9ed3bb9f02922b4dde40d-refs/branch-heads/3538@{#937}
OS	Windows

Additional Information

@brave/legacy_qa if anyone has Win 7 x86, can you please check and see if it’s being installed for you? If you don’t have Win 7 x86, maybe try a few installs on any Win x86 systems.