There is currently a bug which requires you to uninstall the QUBEdocs Connector through Add or Remove Programs before continuing. Don't worry, this will not remove any of your saved configuration. However, it is important you install it into the same directory. This will be addressed in a future version.
Every now and again you will notice a new button showing up within the connector alerting you of a new version.
When this shows up simply click on it to download the latest installer.
The next step is to stop the QUBEdocs Connector, you can do this by opening the task manager and going to the services tab, finding the service called QUBEdocsServiceConnector, right clicking on it and selecting stop.
After that you will be able to run the downloaded installer as normal. Once it is complete you will be able to access the connector through the same link as always.