Try to limit the windows installer to Windows 7 or higher and only 64Bits

bundle/win/shortcut.qs

@@ -1,6 +1,77 @@
+// Skip all pages and go directly to finished page.
+// (see also componenterror example)
+function cancelInstaller(message)
+{
+  installer.setDefaultPageVisible(QInstaller.Introduction, false);
+  installer.setDefaultPageVisible(QInstaller.TargetDirectory, false);
+  installer.setDefaultPageVisible(QInstaller.ComponentSelection, false);
+  installer.setDefaultPageVisible(QInstaller.ReadyForInstallation, false);
+  installer.setDefaultPageVisible(QInstaller.StartMenuSelection, false);
+  installer.setDefaultPageVisible(QInstaller.PerformInstallation, false);
+  installer.setDefaultPageVisible(QInstaller.LicenseCheck, false);
+
+  var abortText = "<font color='red'>" + message +"</font>";
+  installer.setValue("FinishedText", abortText);
+}
+
+function isVersionNewer(version, version2) {
+
+  if (version && version2) {
+    version = version.split('.');
+    version2 = version2.split('.');
+
+    for (var i = 0, len = version.length; i < len; i++) {
+      if (i < version2.length) {
+        var minVersionDot = parseInt(version[i], 10);
+        var version2Dot = parseInt(version2[i], 10);
+
+        if (minVersionDot < version2Dot) {
+          return true;
+        } else if (minVersionDot > version2Dot) {
+          return false;
+        }
+      }
+    }
+    return true;
+  } else {
+    return true;
+  }
+}
+
 function Component()
 {
-  // default constructor
+  //
+  // Check whether OS is supported.
+  //
+  // For Windows and OS X we check the kernel version:
+  //  - Require at least Windows Vista (winnt kernel version 6.0.x)
+  //  - Require at least OS X 10.7 (Lion) (darwin kernel version 11.x)
+  //
+  // If the kernel version is older we move directly
+  // to the final page & show an error.
+  //
+  // For Linux, we check the distribution and version, but only
+  // show a warning if it does not match our preferred distribution.
+  //
+
+  // start installer with -v to see debug output
+  console.log("OS: " + systemInfo.productType);
+  console.log("Kernel: " + systemInfo.kernelType + "/" + systemInfo.kernelVersion);
+
+  var validOs = false;
+  var validArch = false;
+
+  if (systemInfo.kernelType === "winnt") {
+    if (isVersionNewer(systemInfo.kernelVersion, "6.1.0"))
+      validOs = true;
+
+    if (systemInfo.currentCpuArchitecture === "x86_64")
+      validArch = true;
+  }
+
+  if (!validOs || !validArch) {
+    cancelInstaller("Installation on " + systemInfo.prettyProductName + " (" + systemInfo.currentCpuArchitecture + ") is not supported");
+  }
 }
 
 Component.prototype.createOperations = function()
@@ -12,4 +83,4 @@ Component.prototype.createOperations = function()
     component.addOperation("CreateShortcut", "@TargetDir@/PlexMediaPlayer-angle.bat", "@StartMenuDir@/Plex Media Player (DirectX).lnk");
     component.addOperation("CreateShortcut", "@TargetDir@/maintenancetool.exe", "@StartMenuDir@/Maintain Plex Media Player.lnk");
   }
-}
+}