diff --git a/.gitignore b/.gitignore
index a8337127..caa5aaa4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -139,3 +139,10 @@ examples/results/*.dat
 /examples/test_data/TwoCell.net.png
 /examples/test_data/Purk2M9s.png
 /.coverage
+/Nav.channel.nml
+/iv_izh2007RS0.net.nml
+/leak_chan.channel.nml
+/test_analysis_if.png
+/test_analysis_iv.png
+/test_analysis_traces.png
+/test_cell_analysis.cell.nml
diff --git a/pyneuroml/lib/jNeuroML-0.12.0-jar-with-dependencies.jar b/pyneuroml/lib/jNeuroML-0.12.0-jar-with-dependencies.jar
index 829c660f..45f97977 100644
Binary files a/pyneuroml/lib/jNeuroML-0.12.0-jar-with-dependencies.jar and b/pyneuroml/lib/jNeuroML-0.12.0-jar-with-dependencies.jar differ
diff --git a/pyneuroml/pynml.py b/pyneuroml/pynml.py
index f85353fb..57a259bf 100644
--- a/pyneuroml/pynml.py
+++ b/pyneuroml/pynml.py
@@ -2523,7 +2523,11 @@ def execute_command_in_dir(
         return_string = return_string.decode("utf-8")  # For Python 3
 
         logger.info(
-            "Command completed. Output: \n %s%s"
+            "Command completed successfully!"
+        )
+        if verbose:
+            logger.info(
+            "Output: \n %s%s"
             % (prefix, return_string.replace("\n", "\n " + prefix))
         )
         return (0, return_string)