I get the following exception message printed from the recently added proxy setting code. I may have been running on VPN when it happened. I just created a default JavaFX program in NB 7.1.2 and ran it from within NetBeans. The program runs normally after printing the message:

java.net.SocketException: Permission denied: connect
   at java.net.DualStackPlainSocketImpl.connect0(Native Method)
   at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:69)
   at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
   at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
   at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
   at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:157)
   at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391)
   at java.net.Socket.connect(Socket.java:579)
   at java.net.Socket.connect(Socket.java:528)
   at sun.net.NetworkClient.doConnect(NetworkClient.java:180)
   at sun.net.www.http.HttpClient.openServer(HttpClient.java:378)
   at sun.net.www.http.HttpClient.openServer(HttpClient.java:473)
   at sun.net.www.http.HttpClient.<init>(HttpClient.java:203)
   at sun.net.www.http.HttpClient.New(HttpClient.java:290)
   at sun.net.www.http.HttpClient.New(HttpClient.java:306)
   at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:995)
   at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:974)
   at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:849)
   at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1299)
   at com.sun.deploy.net.proxy.AbstractAutoProxyHandler.getJSFileFromURL(Unknown Source)
   at com.sun.deploy.net.proxy.AbstractAutoProxyHandler.init(Unknown Source)
   at com.sun.deploy.net.proxy.DynamicProxyManager.reset(Unknown Source)
   at com.sun.deploy.net.proxy.DeployProxySelector.reset(Unknown Source)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:601)
   at com.javafx.main.Main.tryToSetProxy(Main.java:550)
   at com.javafx.main.Main.launchApp(Main.java:588)
   at com.javafx.main.Main.main(Main.java:747)