CutePDF Writer: Problems with silent uninstall

I am trying to perform an unattended, silent uninstall of the CutePDF Writer 3.0, via command line. Every available source I have found points me to these two commands:

[32bit] "%ProgramFiles%\Acro Software\CutePDF Writer\uninscpw.exe" -s [64bit] "%ProgramFiles(x86)%\Acro Software\CutePDF Writer\setup64.exe" /uninstall -s 

Sample sources: source #1 (v3.0), source #2 (v2.8), source #3 (v2.8) Yet this doesn't work for me. Every time I try I get a message box I must click:

This will remove CutePDF Writer from your system. Do you wish to continue? 

The problem replicates every single time. I also tried other popular switches like /silent , /verysilent , /S , even the SUPRESSMSGBOX which was once said to be working with the older installer of Writer. Nothing worked.

I have filed an issue at CutePDF website, but it's free software and not their support priority.

The Question:

Since multiple sources point to this method, I am kind of lost. Could they all be wrong, or is something wrong with my environment? Perhaps it's locale-specific?

I'd be thankful for anyone to check if the same problem occurs on other machines, especially on Windows locale different than PL (1045).

Perhaps someone knows some better way to perform an unattended uninstall of this product?