Added better error handling when a job fail from the GUI

MDANSE/GUI/Plugins/JobPlugin.py

@@ -41,6 +41,7 @@ import wx.aui as aui
 
 from MDANSE import PLATFORM,REGISTRY
 from MDANSE.Framework.InputData.EmptyData import EmptyData
+from MDANSE.Framework.Jobs.IJob import JobError
 
 from MDANSE.GUI import PUBLISHER
 from MDANSE.GUI.DataController import DATA_CONTROLLER
@@ -119,11 +120,13 @@ class JobPlugin(ComponentPlugin):
         else:
             startupinfo = None
 
-        subprocess.check_output([sys.executable, filename],stderr=subprocess.STDOUT)
-        
-        time.sleep(1)
-
-        PUBLISHER.sendMessage("msg_start_job",message=None)
+        try:
+            subprocess.check_output([sys.executable, filename],stderr=subprocess.STDOUT)
+        except subprocess.CalledProcessError as e:
+            raise JobError(e.output)
+        else:        
+            time.sleep(1)
+            PUBLISHER.sendMessage("msg_start_job",message=None)
         
     def on_save(self, event=None):