new test info :
deleted all those d's again.
step 1 : open cb (no d message) , open my project, close cb (workspace changed, save, yes) --> d shows up
step 2 : open cb (no d message), (my project was not again opened), open project , close cb (workspace changed, save, yes) --> d.workspace shows up
step 3 : open cb, (my project was not again opened), open project , close cb (workspace changed, save, yes)
...