You can type in things like the following:
Code:
(entdel (handent "B119"))
for each MOO error. Just be warned that this may cause unpredictalbe damage to your drawing. Usually it destroys a Style, so you may find you need to delete and recreate one or more styles after doing this.
If it is not in your drawing template, the easiest solution is sometimes to ignore it, unless you run into the problem where changing a Child style is propagating the change to the Parent (which can happen when you see this error).
This problem's been in C3D for a long time now, and is one I would really like to see go away...