As we approach the release of v4.0 I would just like to remind you all that this is a major release and that older v3.x show files will not directly open into v4.0 at this time. If you choose to upgrade to v4.0, you will need to create a new show file to work from.
If you have a lot of collected data that you would like to use with v4.x, PLEASE WAIT TO UPGRADE. We will be starting beta for v3.21 soon, which includes the EXPORT functions that will be required to get older show data into v4.x. Shortly after that, we will open up beta for v4.1, which contains the IMPORT functions. At that point, it will be possible to bring your show data over, including fixture data, but please take the time to verify that everything makes the transition ok before doing a show.
All older Hog software is always available here, including v3.20.