There are known problems with the samples offered in the Classroom in a Book series for Premiere Elements.
Is your problem extended to all the lesson files or just some.
Please contact the publisher of the book for lessons files issues correction...there have been many.
You should see the Publisher contact information in the book somewhere.
How are you trying to open a file in Premiere Elements 12, Add Media/then what?
And what is the name of a specific file in those lessons that you are trying to open in Premiere Elements 12?
Probably, more important and to the point, can you import your own stills or videos without problems into
Premiere Elements 12?
Please update 12 to 12.1 Update if you have not already. See an opened project's Help Menu/Update.
Any questions or need clarification, please do not hesitate to ask.
to A.T. Romano
Thanks for responding to my question.
I so bad at this I could not figure out how to reply to your questions.
I was not connected to community.
Hope this works now.
OK I go to add media and I tried many lessons and get the same reply :
Lesson.zip not supported ro required codec is not installed
I can inport all my pictures and videos.
Great news that you can import all your own pictures and videos.
Contact with the publisher of the book should prove helpful. It is my understanding
that it has been very co-operative with book owners in the past.
Please update us on your progress when time permits.
To A.T. Romano
Thank you for your reply
will contact publisher of the book