Packing List Cloud Connector is NOT a standalone application. It needs to be used along with Packing List Full Version (v3. 1. 0 or later). You cannot open it. When you have it installed on your device, you can upload/download your packing lists to/from our cloud server using Packing List Full app. You can backup your lists, edit them online and share with other users. You will need to register at www.dotnetideas.com first. After you download and install this cloud connector, please stop and re-start the Packing List in order for it to recognize this add-on. The "Sync List" menu will be enabled. It will prompt you to login if you haven't done so. Please feel free to contact us with questions and feedback.