diff --git a/basico/task_steadystate.py b/basico/task_steadystate.py
index 6db3ddb..1d3e28f 100644
--- a/basico/task_steadystate.py
+++ b/basico/task_steadystate.py
@@ -88,6 +88,7 @@ def run_steadystate(**kwargs):
         logger.error("Error while initializing the simulation: " +
         model_info.get_copasi_messages(num_messages_before, 'No output'))
     else:
+        num_messages_before = COPASI.CCopasiMessage.size()
         task.setCallBack(get_default_handler())
         result = task.processRaw(use_initial_values)
 
diff --git a/tests/test_mca.py b/tests/test_mca.py
index 32dcc21..e1d8c15 100644
--- a/tests/test_mca.py
+++ b/tests/test_mca.py
@@ -23,6 +23,18 @@ def test_run(self):
         flux_control_coefficients = basico.get_flux_control_coefficients()
         self.assertIsNotNone(flux_control_coefficients)
 
+class TestMCAYeast(unittest.TestCase):
+    def setUp(self):
+        basico.load_example('YeastGly')
+        self.assertIsNotNone(basico.get_species('ATP', exact=True))
+
+    def test_steadystate(self):
+        result = basico.run_steadystate()
+        self.assertTrue(result)
+        species = basico.get_species()
+        self.assertIsNotNone(species)
+
+
 
 
 if __name__ == '__main__':