Hello, there is no need to re-install. In order to use NETFILE with the UFile program, a volunteer needs to purchase UFile for Windows at Staples (Bureau en Gros), Future Shop, Best Buy, The Source and Jean Coutu, across Canada or at www.ufile.ca. A Standard activation key, which provides NETFILE capability, is associated with the UFile consumer product. All what is required is then to add the key to the already installed UFile CVITP program.
There is no need to download the .tax file making the NETFILE process much simpler. If you look at the Tax diagnostics section of the .pdf you will see a couple of pages called "EFILE federal return record these record the fields sent to the CRA for NETFILE and replace the .tax file. I hope this helps.