setNotRunning before launching the router, counter-intuitively but this is for determining whether we should launch the browser only. The other checks will still work for determining if a router is there. It only needs to be there for the first 21 or so seconds.

java/net/i2p/router/WinLauncher.java

@@ -180,7 +180,11 @@ public class WinLauncher {
     File home = selectHome();
     File running = new File(home, "running");
     if (!running.exists()){
-      running.createNewFile();
+      try{
+        running.createNewFile();
+      }catch(IOException e){
+        logger.info(e.toString());
+      }
     }
   }