Unbalanced parenthesis.

While trying to use https://software-static.download.prss.microsoft.com/dbazure/26100.8972.260722-1659.ge_release_svc_prod3_amd64fre_en-us_VALIDATIONOS.iso as something like:

D:\ValidationOSImageBuilder\x64\ValidationOSImageBuilderCLI.exe `
  --generate-image `
  --output C:\WinVOS `
  --features SMB.pkg `
  --features graphics.pkg

I get a lot of output messages that seem like an uncaught error alike Unbalanced parenthesis (not sure they are related to the output that is displayed arround them):

Logging into C:\Users\vagrant\AppData\Local\Temp\1\WinVOS\out\260818-1919\Logs\RunCMD\19-36-04.77--reg-load.log

Unbalanced parenthesis.

reg load HKLM\VOS_SYSTEM "C:\Users\vagrant\AppData\Local\Temp\1\WinVOS\out\260818-1919\mnt\Windows\System32\config\SYSTEM"



Logging into C:\Users\vagrant\AppData\Local\Temp\1\WinVOS\out\260818-1919\Logs\RunCMD\19-36-05.01--reg-add.log

Unbalanced parenthesis.

reg add "HKLM\VOS_SYSTEM\ControlSet001\Control" /v SystemBootDriveLetter /t REG_DWORD /d 88 /f

It seems something is broken somewhere inside ValidationOSImageBuilderCLI.exe (or in something it calls) and looks like a bug.

Thou, the ValidationOS.wim file is generated and seems to work; thou, those kinds of messages should be handled/fixed.

Reproduce the command with the linked Validation OS ISO using ValidationOSImageBuilderCLI.exe and review the generated RunCMD logs, especially reg-load.log and reg-add.log. Trace why the registry commands emit “Unbalanced parenthesis”; done means the image generation completes without these uncaught error messages while producing a usable ValidationOS.wim.