Fixing a few bugs in the unicode path changes.

IPython/kernel/ipcontrollerapp.py

@@ -34,7 +34,7 b' from IPython.kernel.clusterdir import ('
 
 from IPython.core import release
 
-from IPython.utils.traitlets import Str, Instance
+from IPython.utils.traitlets import Str, Instance, Unicode
 
 from IPython.kernel import controllerservice
 

IPython/kernel/launcher.py

@@ -332,6 +332,13 b' class SSHLauncher(BaseLauncher):'
         return super(SSHLauncher, self).start()
 
 
+# This is only used on Windows.
+if os.name=='nt':
+    job_cmd = find_cmd('job')
+else:
+    job_cmd = 'job'
+
+
 class WindowsHPCLauncher(BaseLauncher):
 
     # A regular expression used to get the job id from the output of the 
@@ -349,7 +356,7 b' class WindowsHPCLauncher(BaseLauncher):'
         default_value='Highest', config=True)
     requested_nodes = Str('', config=True)
     project = Str('MyProject', config=True)
-    job_cmd = Str(find_cmd('job'), config=True)
+    job_cmd = Str(job_cmd, config=True)
 
     def __init__(self, working_dir, parent=None, name=None, config=None):
         super(WindowsHPCLauncher, self).__init__(