Index: plugins/org.apache.karaf.eik.ui/src/main/java/org/apache/karaf/eik/ui/project/impl/KarafRuntimePropertyBuildUnit.java
===================================================================
--- plugins/org.apache.karaf.eik.ui/src/main/java/org/apache/karaf/eik/ui/project/impl/KarafRuntimePropertyBuildUnit.java	(revisione 1402784)
+++ plugins/org.apache.karaf.eik.ui/src/main/java/org/apache/karaf/eik/ui/project/impl/KarafRuntimePropertyBuildUnit.java	(copia locale)
@@ -73,7 +73,7 @@
 
         runtimeFolder.refreshLocal(0, monitor);
 
-        FileOutputStream out;
+        FileOutputStream out = null;
         try {
             out = new FileOutputStream(runtimeProperties.toFile());
             combinedProperties.store(out, "Combined interpolated runtime properties");
@@ -85,6 +85,22 @@
                             "Unable to build runtime property file",
                             e));
         }
+	 finally
+        {
+            try
+            {
+                if (out != null)
+                {
+                    out.close();
+                }
+
+            }
+            catch (IOException e)
+            {
+                // ignore
+            }
+        }
+
     }
 
 }