alt-f2 doesn't launch anything anymore

Binary package hint: unity

Hey

alt-f2 doesn't work for me anymore; I have unity 3.8.8-0ubuntu1 and trying to run either scripts of mine, or just "xterm" or even explicitly "/usr/bin/xterm" fails.

looking at .xsession-errors I see this when typing alt-f2:

(<unknown>:16540): dee-CRITICAL **: dee_model_get_last_iter: assertion `DEE_IS_MODEL (self)' failed

(<unknown>:16540): GLib-GIO-CRITICAL **: g_dbus_proxy_call: assertion `G_IS_DBUS_PROXY (proxy)' failed

(<unknown>:16540): dee-CRITICAL **: dee_model_get_first_iter: assertion `DEE_IS_MODEL (self)' failed

(<unknown>:16540): dee-CRITICAL **: dee_model_get_last_iter: assertion `DEE_IS_MODEL (self)' failed
(a bunch of repeated lines)

and once the search for the command completes I get:

** (<unknown>:16540): DEBUG: Cannot activate anything

Cheers,