I get this error installing maemo sdk and it stops:

0 upgraded, 0 newly installed, 0 to remove and 131 not upgraded.
E: Scratchbox command '/scratchbox/sbin/sbox_adduser' is not executable.
E: Something went wrong with the install. Sorry.
V [14:43:10 27.11.2009]: Installer execution failed
V [14:43:10 27.11.2009]: ----- Begin logging exception -----
Traceback (most recent call last):
File "./maemo-sdk-install-wizard_5.0.py", line 2705, in run
task()
File "./maemo-sdk-install-wizard_5.0.py", line 2318, in __taskInstallScratchbox
raise Exception("Installer execution failed")
Exception: Installer execution failed
V [14:43:10 27.11.2009]: ----- End logging exception -----
V [14:43:10 27.11.2009]: Executor set exit status to (status_error)