Thank you very much, a practical workaround!
I built the configuration in my account, downloaded the files to a spare set of SD's and loaded them in the D's. Then there was no output at all at the headphones. I remembered that this also happened yesterday, it only worked after editing the files directly from the SD's. So, I edited the SD's from yesterday, the way is was advised and it worked! I really see no difference at all between the configuration in my account and on the files. I guess there is more than one thing wrong with the configurator! Anyway, For now I am happy with the result.
I built the configuration in my account, downloaded the files to a spare set of SD's and loaded them in the D's. Then there was no output at all at the headphones. I remembered that this also happened yesterday, it only worked after editing the files directly from the SD's. So, I edited the SD's from yesterday, the way is was advised and it worked! I really see no difference at all between the configuration in my account and on the files. I guess there is more than one thing wrong with the configurator! Anyway, For now I am happy with the result.