★Why does the installation of ZWCAD add-ons fail with “reg is not recognized”

Issue:

When installing ZWCAD add-ons, such as Point Cloud Assistant or ZWVectorization Tool, the installation may fail.

The installation log may contain the following error:

'reg' is not recognized as an internal or external command,
operable program or batch file.

The installation may then terminate with error code 1603.

Press Win + R and enter CMD to open Command Prompt
Run the following code:
C:\Windows\System32\reg.exe query "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v Path
Then run: echo PATH=[%PATH%]
Check the results.
If either of the following conditions is found:
The System Path is stored as REG_SZ and contains %SystemRoot%\System32; or
The effective PATH does not contain C:\Windows\System32, or still shows %SystemRoot%\System32 without being expanded;
then the System32 path may not be resolved correctly. Continue with the following steps.
If C:\Windows\System32 is already correctly included in the effective PATH, this FAQ may not apply to the issue.
Press Win + R, enter: sysdm.cpl
and press Enter.
Go to Advanced → Environment Variables.
Under System variables, select Path and click Edit.
Find: %SystemRoot%\System32
Replace it with: C:\Windows\System32 and click OK
Do not delete or modify other Path entries.
Save the changes and restart Windows.
Run the ZWCAD or add-on installer again.