thank you for looking into it! I got that pop up as well but I just told it to run anyway and it never came back after the first time. Let me try your suggestions
Viewing post in Mesheeto - 3D To Sprite - Small Bug Fix comments
I may have found a fix for you. Before you unzip the files, open the properties on the zip and look at the bottom where it says "This file came from another computer and might be blocked to help protect this computer." and tick the "Unblock" checkbox.
If you don't do that before you unzip the files, every file in the zip gets flagged and a dll file can be blocked, "Python.Runtime.dll".
I hope that helps!