There may be a problem using MacDraw Pro 1.0v1 with Master Juggler. This is a customer-reported problem that has not been confirmed by Claris. The version of Master Juggler used is not known.
The issue: Adding some Adobe fonts, then removing about 10-15 fonts. After removing the fonts, the font menu became corrupted (presumably the MacDraw Pro font menu). The customer may have been adding / removing fonts while MacDraw Pro was open, but this is not known.
The same scenario was repeated using Suitcase without problems.