title: Error Creating a 7-zip installer package
body: <p>If this is not the correct place to ask this, I apologize.</p>
  
  <p>I use 7zip to create an installer package. Recently, my computer was updated, and I can no longer get it to work. I use a Windows Installer from Visual Studio 2010 to create the installation package, which I add to a file called setup.7z. I have confirmed that the files are archived correctly. I then call </p>
  
  <p><code>copy /b 7zsd.sfx + config.txt + setup.7z setup.exe</code> </p>
  
  <p>which packages everything into a single file called "<code>setup.exe</code>". Clicking on this would start the installer.</p>
  
  <p>After the update, I can still make the file, and it looks just fine. However, if I try to click on it, I get a message saying <code>7-Zip: Unsupported method.</code></p>
  
  <p>I have 7-Zip version 18.05 (x86) installed. Honestly, I am not sure where I got the <code>7zsd.sfx</code> file, but do remember having to hunt it down. It has no versioning, but was last modified on 7/13/2007. I don't know if the version matters, since you shouldn't need 7-Zip installed since this is a self-extracting file. However, it may be that the older version isn't able to unzip something zipped by a newer version. </p>