Jeffc

I have version 3.06. I've installed it on new Windows 10 system and it sort of works...but can only open and save Tracklogs format files. Many of the ones I want to use are in .gpx format. I have all the data files and the licence numbers but where can I obtain a copy of the installation file now that Tracklogs as a company no longer exists? I'd appreciate any help please! It's very frustrating having all the data files but unable to run the app properly! Thanks for any help.