Amazfit Watch faces

Aaaa. I found a solution. Run it as an administrator! Sorry, It didn't come to my mind earlier. But your note about the firewall does. So thanks

@Fladis
The first line of the error message says that you cannot access the temporary folder. This may be caused by your OS or firewall settings.
The easiest way to fix it is to try deleting the folder ‘D:\Watch_Face_Editor_(ZeppOS)old\Temp’. You can also try copying the editor to another folder ...

I was working normally in the SW and than I tried to pack the WF and an error occured:

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.IO.IOException: Access to the path 'D:\Watch ...