diff --git a/src/lay/layTechnologyController.cc b/src/lay/layTechnologyController.cc
index f4b753c9d..6f0b26c4f 100644
--- a/src/lay/layTechnologyController.cc
+++ b/src/lay/layTechnologyController.cc
@@ -284,9 +284,14 @@ TechnologyController::update_current_technology ()
     action.set_title (title);
   }
 
-  size_t it = 0;
-  for (lay::Technologies::const_iterator t = lay::Technologies::instance ()->begin (); t != lay::Technologies::instance ()->end () && it < m_tech_actions.size (); ++t, ++it) {
-    m_tech_actions[it].set_checked (t->name () == m_current_technology);
+  std::map<std::string, const lay::Technology *> tech_by_name;
+  for (lay::Technologies::const_iterator t = lay::Technologies::instance ()->begin (); t != lay::Technologies::instance ()->end (); ++t) {
+    tech_by_name.insert (std::make_pair (t->name (), t.operator-> ()));
+  }
+
+  int it = 0;
+  for (std::map<std::string, const lay::Technology *>::const_iterator t = tech_by_name.begin (); t != tech_by_name.end (); ++t, ++it) {
+    m_tech_actions[it].set_checked (t->second->name () == m_current_technology);
   }
 }
 
@@ -323,17 +328,22 @@ TechnologyController::update_menu ()
 
   m_tech_actions.clear ();
 
+  std::map<std::string, const lay::Technology *> tech_by_name;
+  for (lay::Technologies::const_iterator t = lay::Technologies::instance ()->begin (); t != lay::Technologies::instance ()->end (); ++t) {
+    tech_by_name.insert (std::make_pair (t->name (), t.operator-> ()));
+  }
+
   int it = 0;
-  for (lay::Technologies::const_iterator t = lay::Technologies::instance ()->begin (); t != lay::Technologies::instance ()->end (); ++t, ++it) {
+  for (std::map<std::string, const lay::Technology *>::const_iterator t = tech_by_name.begin (); t != tech_by_name.end (); ++t, ++it) {
 
-    std::string title = tech_string_from_name (t->name ());
+    std::string title = tech_string_from_name (t->first);
 
-    m_tech_actions.push_back (pr->create_config_action ("", cfg_initial_technology, t->name ()));
+    m_tech_actions.push_back (pr->create_config_action ("", cfg_initial_technology, t->first));
     m_tech_actions.back ().set_title (title); // setting the title here avoids interpretation of '(...)' etc.
     m_tech_actions.back ().set_checkable (true);
-    m_tech_actions.back ().set_checked (t->name () == m_current_technology);
-    for (std::vector<std::string>::const_iterator t = tech_group.begin (); t != tech_group.end (); ++t) {
-      pr->menu ()->insert_item (*t + ".end", "technology_" + tl::to_string (it), m_tech_actions.back ());
+    m_tech_actions.back ().set_checked (t->first == m_current_technology);
+    for (std::vector<std::string>::const_iterator tg = tech_group.begin (); tg != tech_group.end (); ++tg) {
+      pr->menu ()->insert_item (*tg + ".end", "technology_" + tl::to_string (it), m_tech_actions.back ());
     }
 
   }
@@ -353,7 +363,7 @@ TechnologyController::show_editor ()
     //  determine the technology files that need to be deleted and delete them
     std::set<std::string> files_before;
     for (lay::Technologies::const_iterator t = new_tech.begin (); t != new_tech.end (); ++t) {
-      if (! ! t->tech_file_path ().empty () && ! t->is_persisted ()) {
+      if (! t->tech_file_path ().empty () && ! t->is_persisted ()) {
         files_before.insert (t->tech_file_path ());
       }
     }
diff --git a/src/laybasic/layAbstractMenu.cc b/src/laybasic/layAbstractMenu.cc
index c0516fa87..3c62f6bb9 100644
--- a/src/laybasic/layAbstractMenu.cc
+++ b/src/laybasic/layAbstractMenu.cc
@@ -635,7 +635,6 @@ ConfigureAction::triggered ()
   } 
 
   m_pr->config_set (m_cname, m_cvalue);
-  m_pr->config_end ();
 }
 
 void
diff --git a/src/laybasic/layTechnology.cc b/src/laybasic/layTechnology.cc
index 5cc9434e7..09e596bdd 100644
--- a/src/laybasic/layTechnology.cc
+++ b/src/laybasic/layTechnology.cc
@@ -256,7 +256,8 @@ Technology::Technology (const Technology &d)
     m_explicit_base_path (d.m_explicit_base_path), m_default_base_path (d.m_default_base_path),
     m_load_layout_options (d.m_load_layout_options),
     m_save_layout_options (d.m_save_layout_options),
-    m_lyp_path (d.m_lyp_path), m_add_other_layers (d.m_add_other_layers), m_persisted (d.m_persisted)
+    m_lyp_path (d.m_lyp_path), m_add_other_layers (d.m_add_other_layers), m_persisted (d.m_persisted),
+    m_readonly (d.m_readonly), m_lyt_file (d.m_lyt_file)
 {
   for (std::vector <TechnologyComponent *>::const_iterator c = d.m_components.begin (); c != d.m_components.end (); ++c) {
     m_components.push_back ((*c)->clone ());
@@ -277,6 +278,8 @@ Technology &Technology::operator= (const Technology &d)
     m_lyp_path = d.m_lyp_path;
     m_add_other_layers = d.m_add_other_layers;
     m_persisted = d.m_persisted;
+    m_readonly = d.m_readonly;
+    m_lyt_file = d.m_lyt_file;
 
     for (std::vector <TechnologyComponent *>::const_iterator c = m_components.begin (); c != m_components.end (); ++c) {
       delete *c;
@@ -400,7 +403,8 @@ Technology::load (const std::string &fn)
   //  use the tech file's path as the default base path
   std::string lyt_file = tl::to_string (QFileInfo (tl::to_qstring (fn)).absoluteDir ().path ());
   set_default_base_path (lyt_file);
-  set_tech_file_path (lyt_file);
+
+  set_tech_file_path (fn);
 }
 
 void