hello, i have a problem in my draftsight. where can i get support?

the problem is that when i choose the "options" button from the right mouse click, i get "error" in the command window and the "options" menu does not open..

allso there are many dwg files that until yesterday where fine but now the program do not open them, and again i get "error" in the window command.

i need help.

regards,