diff --git a/biosimulators_cobrapy/core.py b/biosimulators_cobrapy/core.py
index e6c85f8..608d3be 100644
--- a/biosimulators_cobrapy/core.py
+++ b/biosimulators_cobrapy/core.py
@@ -81,9 +81,15 @@ def exec_sed_task(task, variables, log=None):
     '''
     log = log or TaskLog()
 
-    validation.validate_model_language(task.model.language, ModelLanguage.SBML)
-    validation.validate_model_change_types(task.model.changes, ())
-    validation.validate_simulation_type(task.simulation, (SteadyStateSimulation, ))
+    model = task.model
+    sim = task.simulation
+
+    raise_errors_warnings(validation.validate_model_language(task.model.language, ModelLanguage.SBML),
+                          error_summary='Language for model `{}` is not supported.'.format(model.id))
+    raise_errors_warnings(validation.validate_model_change_types(task.model.changes, ()),
+                          error_summary='Changes for model `{}` are not supported.'.format(model.id))
+    raise_errors_warnings(validation.validate_simulation_type(task.simulation, (SteadyStateSimulation, )),
+                          error_summary='{} `{}` is not supported.'.format(sim.__class__.__name__, sim.id))
     target_x_paths_ids = validation.validate_variable_xpaths(
         variables, task.model.source, attr='id')
     namespaces = get_namespaces_for_xml_doc(etree.parse(task.model.source))
diff --git a/tests/test_core_main.py b/tests/test_core_main.py
index 2913918..80cb1b6 100644
--- a/tests/test_core_main.py
+++ b/tests/test_core_main.py
@@ -41,8 +41,7 @@ def setUp(self):
         self.dirname = tempfile.mkdtemp()
 
     def tearDown(self):
-        #shutil.rmtree(self.dirname)
-        print(self.dirname)
+        shutil.rmtree(self.dirname)
 
     def test_exec_sed_task_successfully(self):
         task = sedml_data_model.Task(
@@ -263,7 +262,6 @@ def _build_combine_archive(self, model_changes=None, algorithm=None):
                                         'archive.omex' if algorithm is None else 'archive-{}.omex'.format(algorithm.kisao_id))
         CombineArchiveWriter().run(archive, archive_dirname, archive_filename)
 
-        print(archive_filename)
         return (doc, archive_filename)
 
     def _build_sed_doc(self, model_changes=None, algorithm=None):