I suspect you are installing the individual "versions" folders to your locations folder???
As said above. Install the main folder.
Also again, either open the zips on your desktop or even have a "new folder" set up to extract them in. Then look at what you have.
If it has a "gamedata" folder then just drop that into your "gtl" folder and when promped to, hit "overwrite all". Those tracks that are set up that way are pretty easy.
But again, I stress, as the gentlemen above have stressed, open the zip BEFORE you install and look at what you have. If you have one folder with "track name" then that's it, drop it into your locations folder. I know some people package tracks so they are in a second folder but with experience you will see this. In these cases, it's the second folder you drop in "locations"
With me so far??
Okay, now, as you mention, multiple version tracks.
Okay, for instance, a lot of versions of the Nordshlieffe have multiple layouts. Like I'm currently looking at "Nos2007" and inside THAT we have a buncha files. like blk files etc and some more folders, like "24h", "Tourist" and "VLN"
Okay. so if I had just opened this track on my desktop or in that "new folder" I would open the Nos2007 folder see all the various files and multiple folders as mentioned above. The files would tell me that the folder THEY are in along with the "version" folders is the one I drop in "locations" So I go back one and drop Nos2007 in locations. Got that?
Like open Lemans_Virtual_LM and you get inside the main folder, a 1977 and 1979 version of the track so you know to "go back one" and drop the folder they ALL are in to locations.
I think Watkins Glen has like "Chicane" and another version? Anyways, again, just drop the folder that hold ALL the versions in locations.
And if you mess up, the wonderfulness is you can remove them and start again so I suggest copy and pasting, rather than cut n pasting until you are able to get the track up and running and tested.
It may take some trial and error and practice but once you've done a few, you will marvel that you couldn't "see it" before. I know I did! It's really cool once you start getting used to it. And don't hesitate to open up those folders and explore tham and see how they're structured. it helps.
Best of luck and never be afraid to ask. That's what SJ is all about. Friends helping friends. Take advice, take constructive criticism, take it all with a sense of humour and comraderie as most here quite openly speak their minds but also no one takes it personal as we are all here to help each other.