diff --git a/common.pri b/common.pri
index 7fadeef..7d148ef 100644
--- a/common.pri
+++ b/common.pri
@@ -56,7 +56,7 @@ RCC_DIR        = $${ARCH_DIR}/$${BUILD_TYPE}/rcc
 
 LIMEREPORT_VERSION_MAJOR = 1
 LIMEREPORT_VERSION_MINOR = 4
-LIMEREPORT_VERSION_RELEASE = 2
+LIMEREPORT_VERSION_RELEASE = 4
 
 LIMEREPORT_VERSION = '\\"$${LIMEREPORT_VERSION_MAJOR}.$${LIMEREPORT_VERSION_MINOR}.$${LIMEREPORT_VERSION_RELEASE}\\"'
 DEFINES += LIMEREPORT_VERSION_STR=\"$${LIMEREPORT_VERSION}\"
diff --git a/limereport/lrdatasourcemanager.cpp b/limereport/lrdatasourcemanager.cpp
index cfbafab..dc2c32e 100644
--- a/limereport/lrdatasourcemanager.cpp
+++ b/limereport/lrdatasourcemanager.cpp
@@ -856,7 +856,7 @@ QList<QString> DataSourceManager::childDatasources(const QString &parentDatasour
     foreach(QString datasourceName, dataSourceNames()){
         if (isSubQuery(datasourceName)){
             SubQueryHolder* sh = dynamic_cast<SubQueryHolder*>(dataSourceHolder(datasourceName));
-            if (sh->masterDatasource().compare(parentDatasourceName,Qt::CaseInsensitive)==0){
+            if (sh && sh->masterDatasource().compare(parentDatasourceName,Qt::CaseInsensitive)==0){
                 result.append(datasourceName);
             }
         }
@@ -868,7 +868,8 @@ void DataSourceManager::invalidateChildren(const QString &parentDatasourceName)
 {
     foreach(QString datasourceName, childDatasources(parentDatasourceName)){
         SubQueryHolder* sh = dynamic_cast<SubQueryHolder*>(dataSourceHolder(datasourceName));
-        sh->invalidate(designTime()?IDataSource::DESIGN_MODE:IDataSource::RENDER_MODE);
+        if (sh)
+            sh->invalidate(designTime()?IDataSource::DESIGN_MODE:IDataSource::RENDER_MODE);
         invalidateChildren(datasourceName);
     }
 }
@@ -1110,7 +1111,12 @@ void DataSourceManager::collectionLoadFinished(const QString &collectionName)
             if (!m_datasources.contains(it.value()->queryName().toLower())){
                 connect(it.value(), SIGNAL(queryTextChanged(QString,QString)),
                         this, SLOT(slotQueryTextChanged(QString,QString)));
-                putHolder(it.value()->queryName(),new QueryHolder(it.value()->queryText(), it.value()->connectionName(), this));
+                putHolder(it.value()->queryName(),new SubQueryHolder(
+                              it.value()->queryText(),
+                              it.value()->connectionName(),
+                              it.value()->master(),
+                              this)
+                );
             } else {
                 delete it.value();
                 it.remove();
diff --git a/limereport/lrscriptenginemanager.cpp b/limereport/lrscriptenginemanager.cpp
index dab7272..b975c03 100644
--- a/limereport/lrscriptenginemanager.cpp
+++ b/limereport/lrscriptenginemanager.cpp
@@ -566,8 +566,11 @@ QString ScriptEngineManager::expandDataFields(QString context, ExpandType expand
                 context.replace(rx.cap(0),fieldValue);
 
             } else {
-                QString error = QString("Field %1 not found in %2 !!! ").arg(field).arg(reportItem->objectName());
-                dataManager()->putError(error);
+                QString error;
+                if (reportItem){
+                    error = QString("Field %1 not found in %2 !!! ").arg(field).arg(reportItem->objectName());
+                    dataManager()->putError(error);
+                }
                 varValue = QVariant();
                 if (!dataManager()->reportSettings() || !dataManager()->reportSettings()->suppressAbsentFieldsAndVarsWarnings())
                     context.replace(rx.cap(0),error);