http://pastebin.com/cTNUuw38

You posted this on the wrong plugin github page. However, the problem lies in the fact that you did not supply a portal name after -p. We do need to prevent from throwing an NPE but you can get around this by, you know, using the command correctly.

Changing this to "Suggestion" because the unhandled exception is thrown should be properly handled, as mentioned above. Not sure if done yet, so I'll let the devs finish this (if it's not) and close it.