Hi Mark Thanks for the respon
 

Hi Mark
Thanks for the response.After rebooting etc. Composer still refuses to save the altered not. files as playable mid files, due to "errors in transcribing midi files due to bad data " ( as mentioned below left in Composers window).
No problems altering pitches and saving as mid files in Notation MUSICIAN
to record to wav´s.So my problems are solved.I had to prepare some simple songs for a coming small gig at a birthday party and had to change pitches to be able to " sing " along with some of them.
But I am still puzzled with Composer´s behaviour.Any suggestions ?
Regards
Djim