A customer with a Macintosh II (1 Meg) with a stripped down standard system (version 5.0) and a Viking "Moniterm" gray scale monitor who was unable to open MacDraw II at all.
This information was provided by Claris Corporation on 16 March 1998, and incorporated into Apple Computer's Tech Info Library.
The issue was solved by setting the number of grays in the monitor section of the control panel to 2.
Note: We have a Viking monitor in the department, but were not able to duplicate the problem.