Changing SMTP Settings - Zenoss 4.2.5

Hello, I am trying to change my SMTP settings: However I get directed to an error page " A Zenoss error has occurred". With the following error details:
Type:
Value: invalid literal for int() with base 10: ''

Traceback (most recent call last):
File "/opt/zenoss/lib/python/ZPublisher/Publish.py", line 126, in publish
request,
File "/opt/zenoss/lib/python/ZPublisher/mapply.py", line 77, in mapply
if debug is not None: return debug(object,args,context)
File "/opt/zenoss/lib/python/ZPublisher/Publish.py", line 46, in call_object
result=apply(object,args) # Type s to step into published object.
File "/opt/zenoss/Products/ZenModel/DataRoot.py", line 864, in zmanage_editProperties
self._updateEmailNotifications(REQUEST)
File "/opt/zenoss/Products/ZenModel/DataRoot.py", line 839, in _updateEmailNotifications
notif_value = int(notif_value)
ValueError: invalid literal for int() with base 10: ''

Does any have an idea on how to resolve this error