Use environment variable to set path for nodes....

hardware/Pi/37-rpi-piface.js

@@ -14,7 +14,7 @@
  * limitations under the License.
  **/
 
-var RED = require("../../red/red");
+var RED = require(process.env.NODE_RED_HOME+"/red/red");
 var util = require("util");
 var exec = require('child_process').exec;
 var fs =  require('fs');

hardware/Pi/78-ledborg.js

@@ -14,7 +14,7 @@
  * limitations under the License.
  **/
 
-var RED = require("../../red/red");
+var RED = require(process.env.NODE_RED_HOME+"/red/red");
 var util =  require('util');
 var fs =  require('fs');
 

io/ping/88-ping.js

@@ -13,7 +13,8 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  **/
-var RED = require("../../red/red");
+
+var RED = require(process.env.NODE_RED_HOME+"/red/red");
 var spawn = require('child_process').spawn;
 var plat = require('os').platform();
 
@@ -30,7 +31,6 @@ function PingNode(n) {
         else if (plat == "darwin") ex = spawn('ping', ['-n', '-t 5', '-c 1', node.host]);
         else node.error("Sorry - your platform - "+plat+" - is not recognised.");
         var res="";
-
         ex.stdout.on('data', function (data) {
             //console.log('[ping] stdout: ' + data.toString());
             var regex = /time=(.*)ms/;
@@ -46,12 +46,12 @@ function PingNode(n) {
             if (code == 0) msg = { payload: res, topic:node.host };
             node.send(msg);
         });
-
     }, node.timer);
+
+    this.on("close", function() {
+        clearInterval(this.tout);
+    });
+
 }
 
 RED.nodes.registerType("ping",PingNode);
-
-PingNode.prototype.close = function() {
-	clearInterval(this.tout);
-}

time/79-suncalc.js

@@ -13,7 +13,8 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  **/
-var RED = require("../../red/red");
+
+var RED = require(process.env.NODE_RED_HOME+"/red/red");
 var SunCalc = require('suncalc');
 
 function SunNode(n) {