The subtitle problem actually seems to be caused by the update process. I installed the trial version of 6.1.8.1 in a VM that has no trace of DVDFab and downloaded one of the episodes from before. The subtitles are included. Downloading just SRT subtitles also works.
Now I need to completely uninstall SF using an uninstaller and then reinstall it. Hopefully the uninstaller won't mess anything up.
dasauge
@Cats4U's advice needs to be reiterated here, along with
@NewMelle's, below - DO A FULL SYSTEM BACKUP BEFORE USING AN UNINSTALLER.
When going from using a screen recorder mode StreamFab to a direct download version one (and vice versa) it is important to clean everything out. My suggestion is to do a clean installation of the latest StreamFab release, meaning use a "professional Uninstaller" such as Revo, Ashampoo, and many others (Google "Uninstallers" for additional free and pay programs) to uninstall SF. Right now, I prefer the Ashampoo - . Revo sometimes makes you reboot your computer.
1) Delete your StreamFab Log and Temp folders.
2) Run your uninstaller and remove the existing StreamFab including the registry entries. At one point, it will ask you if you want to save your StreamFab configuration. Say NO. A StreamFab window will come up and ask why you are uninstalling, choose Other.
3) Start reinstall using latest offline update file. I prefer to get mine from the Sticky at the top of this forum.
4) A StreamFab popup will ask for your email/password to authorize your StreamFab. Give your DVDFab email/password, not your forum email/password, if different.
5) Ignore all the garbage advertisements. I don't think I have to tell you that.
6) Reset up your Settings and the GUI the way you want it to look.
7) It is always best to close and then open StreamFab at this point.
8) Give StreamFab a try.
https://forum.dvdfab.cn/forum/software-support-english/youtube-to-mp3-youtube-video-downloader/443367-fully-fixed-amazon-drm-issue-and-latest-netflix-titles-can-be-downloaded-now?p=443487#post443487