You're looking in the wrong folder for MLCad.ini. Try:
C:\Users\<User>\AppData\Roaming\Ing. Michael Lachmann\MLCad
read:
http://www.holly-wood.it/lsynth/tutorial-en.html
w.
C:\Users\<User>\AppData\Roaming\Ing. Michael Lachmann\MLCad
read:
http://www.holly-wood.it/lsynth/tutorial-en.html
w.
LEGO ergo sum