don't try to get statistics, if the server is not enabled

git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@771 bbaffbd6-741e-11dd-a85d-61de82d9cad9

src/pycam/Gui/Project.py

@@ -1468,6 +1468,8 @@ class ProjectGui:
                     not is_available)
             self.gui.get_object("ProcessPoolStatisticsBox").set_visible(
                     is_available)
+            if is_available:
+                # start the refresh function
                 interval = int(max(1, self.gui.get_object(
                         "ProcessPoolRefreshInterval").get_value()))
                 gobject.timeout_add_seconds(interval,

src/pycam/Utils/threading.py

@@ -65,6 +65,9 @@ def is_pool_available():
 
 def get_pool_statistics():
     global __manager
+    if __manager is None:
+        return []
+    else:
         return __manager.statistics().get_worker_statistics()
 
 def init_threading(number_of_processes=None, enable_server=False, remote=None, run_server=False,