DBSCONTROL dont display data

Hi, a few days i opened dbscontrol to view a flag, "GENERAL DISPLAY" and showed me the information correctly, but now that I try to enter does not show me anything, the command continues processing but never ends.

The other commands continue works (MODIFY, QUIT, HELP), DISPLAY command only don't works.

I checked running processes and there is none "ps aux | grep dbscontrol".

thx in advanced