Nothing happens after clicking start

[similair]

Hi all.
I had installed the addon ages ago but never got around to setting it up so yesterday I clicked the Webui button, the webpage that opened just went blank so for whatever reason I just closed it, uninstalled the addon and re-installed.
Unfortunatley, since then clicking the start button nothing happens, I have looked around to see if any stray config files have been lying around and have done several re-installs , I deleted the Unify back up folder but nothing has changed.
The logs say everything has started ok.
At a bit of a loss.
If you need any more info i would be happy to supply.

Man thanks