Something is wrong and needs to be fixed.
I agree. Using Kaspersky is what is wrong, but only you can fix that. 🙂
please work hard on this subject
What can we do? We make safe software. Some other company comes along and says that our software isn't safe. Such a declaration is completely outside our control. You may have better luck contacting Kaspersky, though I wouldn't expect much of a response, and certainly not from the owner of the company, as you are getting here.
I will not use Spine until this is fixed
You are free to make that decision. All I can say is that Spine is safe. We have stated that explicitly in Section 7(d) of the Spine Editor License Agreement. If you, Kaspersky, or anyone else still doesn't believe it, there's nothing else we can do.
I do understand you are concerned with the safety of the software you run on your computer. That is a good thing! However, as I explained previously, Kaspersky simply makes guesses about what is dangerous and often gets it wrong, for Spine and for other software. Use it as a warning, investigate the suspicious software vendor, and if you decide to trust the software vendor then add it to Kaspersky's safelist.
I also asked you to provide me with older version of Spine which is flagged as safe by Kaspersky if you can.
I can't know which version that would be. Is it the older 3.8 version of the Spine launcher? If so we can send that to you, but it is limited to running 3.8.99 editor versions and below. To run 4.0 editor versions the latest Spine launcher must be used.