I installed Threadkeeper as described on these pages.
At this point, I could only see the 3D printed metric thread. So I checked the Fusion360 folder and found all the original .xml files plus the files added by Threadkeeper. I tried deleting the files added by Threadkeeper from the Fusion folder and restarting, but now I can't find any thread types in the drop-down menu.
Now my situation is as follows:
in the fusion folder
(C:\Users<user>\AppData\Local\Autodesk\webdeploy\production\37a4fdb912fcb7645f48036186017c0cc6730354\Fusion\Server\Fusion\Configuration\ThreadData)
I have:

but in the thread window I can't select any thread type

How can I solve the issue?
Thanks
Daniele