QuickDrop Setup, getting message

[bisana]

Hi All
I am trying to install "https://addons.alfresco.com/addons/quikdrop-alfresco"
I am trying with the CE 4.2.c
I installed quick drop and when I started it asked for the url
which I gave repository of the url as

 http://dm.mydm.com:8080/share/page/repository ‍

Then it asked user name and password, I gave the DM user name and password
When I try to connect it is giving this message

Error while logging into the system. Message: Client found response content type of 'text/html,charset=150-8859-1". but expected text/xml, the request failed with the error message"
‍‍‍

Guidance and advice requested
thanks

[s4chin]

getting error : Error while logging into system. Message: the underlying connection was closed. An unexpected error occurred in receive.

[divyabharathipa]

I am also getting same error