You can skip jsgme and just extract every part into one temporary folder (clicking "yes to all" for overwrites), once you've finished move the entire stuff into your IL-2 game folder. This is what jsgme does, but it becomes really slow when it runs into duplicate files. Dont forget to backup your 4.12 stock or modact install because if you screw up somehow you can easily revert to it and start over again.
So I have to extract EVERY file from EACH TFM412 Folder (#1, #2, #3, ...) and put them in a temporary folder; and then? Do I move the content in my MAIN IL-2 game folder or in a specific folder (i.e. in the #SAS Folder, or in the jsgmemod Folder)?
Yes, extract all - in order - overwriting when prompted - to a temp folder. And then move the temp folder contents to the MAIN Il-2 folder.
Please pardon my stupidity, just old age I guess. I have TFM-412 going well, but I did it the hard, long way - each mod enabled, through JSGME, tested and then the next up through 38. Now, I read here there was an easier way, and now I'm intrigued and in case I had to do this again, ever (perish the thought), would these aforementioned contents of the "temp folder" go into the #SAS folder? I'm just curious. In addition to my game running fine, I have a backup on an external drive so I can't imagine I'd ever have to do what is recommended here. But I do read this forum often, even when I'm not having a problem, and try to learn something from you young smart wipper snappers. Thanks from the old folks.