My experience when installed Deluge which I have installed but unable to load it. For first time when load Deluge, it will require to make some configuration adjustment. If there is any error during the configuration. Your Deluge will not able to load.
So, we need to re-configure the setting. But, the previous adjustment config file have to remove.
Deluge config file store at ~/.config/Deluge/ . Just remove Deluge directory and launch Deluge again and you will prompt for the adjustment configure again. You may decide to backup the directory before remove, but will not have problem if delete it 
September 18th, 2008 - 5:19 pm
My Deluge started doing the same thing after replacing my storage hard drive. Thanks for the help!