electron-builder: NSIS Installer Not Working on Second Invocation

• Version: 6.3.5

• Target: Windows

I am building a oneClick:true NSIS installer with perMachine:true. If I run the installer on a clean machine, it works perfectly. If I uninstall then run the installer again, it works perfectly. But if I run the installer when there is a previous (or even exactly the same) app installed, it only installs some of the files.

First run:

 Directory of C:\Program Files\Tour

09/02/2016  12:26 PM    <DIR>          .
09/02/2016  12:26 PM    <DIR>          ..
09/02/2016  11:42 AM            58,177 blink_image_resources_200_percent.pak
09/02/2016  11:42 AM                15 content_resources_200_percent.pak
09/02/2016  11:42 AM         9,852,761 content_shell.pak
09/02/2016  11:42 AM         3,466,856 d3dcompiler_47.dll
09/02/2016  11:42 AM         1,942,528 ffmpeg.dll
09/02/2016  11:42 AM        10,127,152 icudtl.dat
09/02/2016  11:42 AM            80,896 libEGL.dll
09/02/2016  11:42 AM         2,222,592 libGLESv2.dll
09/02/2016  11:42 AM             1,075 LICENSE
09/02/2016  11:42 AM         1,376,928 LICENSES.chromium.html
09/02/2016  11:42 AM    <DIR>          locales
09/02/2016  11:42 AM           394,778 natives_blob.bin
09/02/2016  11:42 AM        12,962,304 node.dll
09/02/2016  11:42 AM    <DIR>          resources
09/02/2016  11:42 AM        62,150,104 Tour.exe
09/02/2016  11:42 AM           643,204 snapshot_blob.bin
09/02/2016  11:42 AM            82,388 ui_resources_200_percent.pak
09/02/2016  11:42 AM           152,032 Uninstall Tour.exe
09/02/2016  11:42 AM            59,985 views_resources_200_percent.pak
09/02/2016  11:42 AM            81,768 xinput1_3.dll
              18 File(s)    105,655,543 bytes
               4 Dir(s)  121,922,035,712 bytes free

Second Run:

 Directory of C:\Program Files\Tour

09/02/2016  12:32 PM    <DIR>          .
09/02/2016  12:32 PM    <DIR>          ..
09/02/2016  11:42 AM         3,466,856 d3dcompiler_47.dll
09/02/2016  11:42 AM         1,942,528 ffmpeg.dll
09/02/2016  11:42 AM            80,896 libEGL.dll
09/02/2016  11:42 AM         2,222,592 libGLESv2.dll
09/02/2016  11:42 AM        12,962,304 node.dll
09/02/2016  11:42 AM        62,150,104 Tour.exe
09/02/2016  11:42 AM           152,032 Uninstall Tour.exe
09/02/2016  11:42 AM            81,768 xinput1_3.dll
               8 File(s)     83,059,080 bytes
               2 Dir(s)  121,945,260,032 bytes free

Third run:

 Directory of C:\Program Files\Tour

09/02/2016  12:32 PM    <DIR>          .
09/02/2016  12:32 PM    <DIR>          ..
09/02/2016  11:42 AM         3,466,856 d3dcompiler_47.dll
09/02/2016  11:42 AM         1,942,528 ffmpeg.dll
09/02/2016  11:42 AM            80,896 libEGL.dll
09/02/2016  11:42 AM         2,222,592 libGLESv2.dll
09/02/2016  11:42 AM    <DIR>          locales
09/02/2016  11:42 AM           394,778 natives_blob.bin
09/02/2016  11:42 AM        12,962,304 node.dll
09/02/2016  11:42 AM    <DIR>          resources
09/02/2016  11:42 AM        62,150,104 Tour.exe
09/02/2016  11:42 AM           643,204 snapshot_blob.bin
09/02/2016  11:42 AM            82,388 ui_resources_200_percent.pak
09/02/2016  11:42 AM           152,032 Uninstall Tour.exe
09/02/2016  11:42 AM            59,985 views_resources_200_percent.pak
09/02/2016  11:42 AM            81,768 xinput1_3.dll
              12 File(s)     84,239,435 bytes
               4 Dir(s)  121,711,751,168 bytes free

I don’t know how to turn on installer logging, or if it is on, I don’t know where to find the logs. So if you could give me a pointer for that, I might be able to get more data.

Other things which might be relevant:

• Doing the build on a Mac
• Signing everything
• Running installer on Windows 7 in a Parallels VM (so it’s single-CPU and not fast)
• I had this issue with 6.3.1 also, but not 5.x (before oneClick existed)
• I had this issue building perMachine:false as well
• Same issue if I set oneClick:false and use the boring installer
• Custom script being included to setup protocol handler (replace __scheme__ with my actual scheme):

!macro customInstall
  DetailPrint "Register __scheme__ URI Handler"
  DeleteRegKey HKCR "__scheme__"
  WriteRegStr HKCR "__scheme__" "" "URL:__scheme__"
  WriteRegStr HKCR "__scheme__" "URL Protocol" ""
  WriteRegStr HKCR "__scheme__\DefaultIcon" "" "$INSTDIR\${APP_EXECUTABLE_FILENAME}"
  WriteRegStr HKCR "__scheme__\shell" "" ""
  WriteRegStr HKCR "__scheme__\shell\Open" "" ""
  WriteRegStr HKCR "__scheme__\shell\Open\command" "" "$INSTDIR\${APP_EXECUTABLE_FILENAME} %1"
!macroend