Better test if pynml installed correctly

Author: pgleeson

omv/engines/jneuroml.py

@@ -81,6 +81,10 @@ def install(version):
         inform("Will fetch and install jNeuroML jar", indent=2)
         install_jnml(version)
 
+        if not JNeuroMLEngine.is_installed():
+            inform("Failure to install, exiting", indent=1)
+            exit(1)
+
     def run(self):
         try:
             inform(

omv/engines/pyneuroml_.py

@@ -38,6 +38,11 @@ def install(version):
         inform("Will fetch and install the latest pyNeuroML", indent=2)
         install_pynml(version)
 
+        if not PyNeuroMLEngine.is_installed():
+            inform("Failure to install, exiting", indent=1)
+            exit(1)
+
+
     def run(self):
         try:
             inform(