As an alternative install method. You may also download the local widget installer available for the Teamstudio tools. This will allow you to drag the widgets from your local drive to the widgets panel within the Lotus Notes 8.5.1 or above client.
Within the zip file you will find both instructions and the required files.
You may download the local installer from here: http://download.teamstudio.com/Edition30.1/en/localInstall.zip