Hello.
The only odd thing I detected is that when using the editor of titles in
Premiere, a change is seen in the panel heading styles, then disappears any
geometric figure one has generated earlier.
Then to save the project, a small red button with a white x in the lower
right side of the Premiere interface appears.
Apparently this tells me that the project was saved with an error and now I
can not recover.
Thanks for responding and hope you find the solution soon.
Sergio