diff --git a/common/lib/dataset.py b/common/lib/dataset.py
index 8d7ee471a..ea62d6678 100644
--- a/common/lib/dataset.py
+++ b/common/lib/dataset.py
@@ -161,7 +161,7 @@ def __init__(self, parameters=None, key=None, job=None, data=None, db=None, pare
 			if extension is None:
 				own_processor = self.get_own_processor()
 				if own_processor:
-					extension = own_processor.get_extension(parent_dataset=DataSet(key=parent, db=db) if parent else None)
+					extension = own_processor.get_extension(parent_dataset=DataSet(key=parent, db=db, modules=self.modules) if parent else None)
 				# Still no extension, default to 'csv'
 				if not extension:
 					extension = "csv"
@@ -171,7 +171,7 @@ def __init__(self, parameters=None, key=None, job=None, data=None, db=None, pare
 
 		# retrieve analyses and processors that may be run for this dataset
 		analyses = self.db.fetchall("SELECT * FROM datasets WHERE key_parent = %s ORDER BY timestamp ASC", (self.key,))
-		self.children = sorted([DataSet(data=analysis, db=self.db) for analysis in analyses],
+		self.children = sorted([DataSet(data=analysis, db=self.db, modules=self.modules) for analysis in analyses],
 							   key=lambda dataset: dataset.is_finished(), reverse=True)
 
 		self.refresh_owners()
@@ -1274,7 +1274,7 @@ def get_all_children(self, recursive=True):
 
 		:return list:  List of DataSets
 		"""
-		children = [DataSet(data=record, db=self.db) for record in self.db.fetchall("SELECT * FROM datasets WHERE key_parent = %s", (self.key,))]
+		children = [DataSet(data=record, db=self.db, modules=self.modules) for record in self.db.fetchall("SELECT * FROM datasets WHERE key_parent = %s", (self.key,))]
 		results = children.copy()
 		if recursive:
 			for child in children:
diff --git a/webtool/views/views_admin.py b/webtool/views/views_admin.py
index 45ec5c55f..65b2711f8 100644
--- a/webtool/views/views_admin.py
+++ b/webtool/views/views_admin.py
@@ -900,7 +900,7 @@ def dataset_bulk():
             flash(f"{len(bulk_owner):,} new owner(s) were added to the datasets.")
 
         if not incomplete:
-            datasets = [DataSet(data=dataset, db=db) for dataset in datasets_meta]
+            datasets = [DataSet(data=dataset, db=db, modules=fourcat_modules) for dataset in datasets_meta]
             flash(f"{len(datasets):,} dataset(s) updated.")
 
             if action == "export":
diff --git a/webtool/views/views_dataset.py b/webtool/views/views_dataset.py
index e7aa2d503..d538ab8c5 100644
--- a/webtool/views/views_dataset.py
+++ b/webtool/views/views_dataset.py
@@ -140,7 +140,7 @@ def show_results(page):
 
     # some housekeeping to prepare data for the template
     pagination = Pagination(page, page_size, num_datasets)
-    filtered = [DataSet(key=dataset["key"], db=db) for dataset in datasets]
+    filtered = [DataSet(key=dataset["key"], db=db, modules=fourcat_modules) for dataset in datasets]
 
     favourites = [row["key"] for row in
                   db.fetchall("SELECT key FROM users_favourites WHERE name = %s", (current_user.get_id(),))]