Occasionally while drawing in LDD1 I become unable to use my express tools.
The AutoCad error is an invalid command. Usually saving closing and
reopening the file fixes the problem, but currently I have a drawing that
the express tools just will not function on. I don't believe that it is a
re-install problem, because I have the same problem on many machines with
the same drawing. Also, I can open other drawings and I don't have the same
problem. Can anybody point me in the right direction?