diff --git a/external/TimeSeries b/external/TimeSeries
index 16093a6..1429ee8 160000
--- a/external/TimeSeries
+++ b/external/TimeSeries
@@ -1 +1 @@
-Subproject commit 16093a64038da071e4dac879fc3fd2ec9fc21c5d
+Subproject commit 1429ee8c3a60f059d192904cd4e857e8196c8347
diff --git a/include/Data/IDataProvider.h b/include/Data/IDataProvider.h
index b63db75..ccae57e 100644
--- a/include/Data/IDataProvider.h
+++ b/include/Data/IDataProvider.h
@@ -30,8 +30,8 @@ class SCIQLOP_CORE_EXPORT IDataProvider : public QObject
 {
   Q_OBJECT
 public:
-  virtual ~IDataProvider() noexcept                    = default;
-  virtual std::shared_ptr<IDataProvider> clone() const = 0;
+  virtual ~IDataProvider() noexcept = default;
+  // virtual std::shared_ptr<IDataProvider> clone() const = 0;
 
   // Synchronous call -> asyncGetData may be written for asynchronous get
   virtual TimeSeries::ITimeSerie*
diff --git a/meson.build b/meson.build
index c00514e..55e5ac1 100644
--- a/meson.build
+++ b/meson.build
@@ -46,8 +46,7 @@ core_moc_headers = [
  './include/Variable/VariableController2.h',
  './include/Variable/Variable2.h',
  './include/Variable/VariableSynchronizationGroup2.h',
- './include/Variable/private/VCTransaction.h',
- './include/Visualization/VisualizationController.h']
+ './include/Variable/private/VCTransaction.h']
 
 
 
@@ -74,8 +73,7 @@ core_sources = ['./src/Common/MimeTypesDef.cpp',
  './src/Variable/VariableSynchronizationGroup2.cpp',
  './src/Variable/Variable2.cpp',
  './src/Variable/VariableController2.cpp',
- './src/Variable/VariableModel2.cpp',
- './src/Visualization/VisualizationController.cpp']
+ './src/Variable/VariableModel2.cpp']
 
 
 core_inc = include_directories(['include', 'include/Plugin'])
diff --git a/tests/TestUtils/TestProviders.h b/tests/TestUtils/TestProviders.h
index 7a48d0e..237fc92 100644
--- a/tests/TestUtils/TestProviders.h
+++ b/tests/TestUtils/TestProviders.h
@@ -20,10 +20,10 @@ public:
   SimpleRange() = default;
 
   int callCounter = 0;
-  std::shared_ptr<IDataProvider> clone() const override
-  {
-    return std::make_shared<SimpleRange>();
-  }
+  //  std::shared_ptr<IDataProvider> clone() const override
+  //  {
+  //    return std::make_shared<SimpleRange>();
+  //  }
 
   TimeSeries::ITimeSerie*
   getData(const DataProviderParameters& parameters) override