[DesktopManager] Ctlr - D (do-it) is blocked after installation of desktop manager

Hello

After I have installed the DesktopManager in Pharo 6.1 (labelled as
6.0) I cannot use the

    ctrl D

shortcut to issue a 'do it' command. It interferes with the ctrl-D
short cut system of the desktop manager.

The do-it shortcut do execute a Smalltalk expression is more important
for the than the direct access to the desktop manager.

How can I resolve this?

Menu 'Tools -> System -> Keymap browser' gives a list of key mapping
assignments, but does not allow to edit them.

Regards

Hannes