Hello again, just say that I discovered the mistake ... it was my fault.
I reviewed the four tutorials and manual over 50 times but I was not aware of a check.
I even came to think it must be a bug!.
For some reason I do not know, nobody ever said anything in the forum.
I'm glad I discovered the error, after almost one week looking for it, now finally I will continue with my work.
Greetings!.