Hatch command or hatch edit not working

Hello, 

I'm using Draftsight 2020 Professional. The hatch command doesn't work anymore. Also, if I want to edit an existing hatch, it doesn't open the dialog box. The command name appears on the command prompt, the cursor shape changes, but the hatch palette or dialog doesn't appear. The program doesn't crash, when I press esc it resumes to drawing space.

Thank you.