After installing and successfully running MagicDraw 18.4 on Mac OS X I learned the company license is for v18.1. After install of 18.1 it fails on startup with this message:
Unexpected error. Please contact support.
java.io.FileNotFoundException: /private/var/folders/2l/vdyy40995hq3cnt0nvz2151h_gdpqr/T/AppTranslocation/73E2206D-AF3F-477B-A5B1-FA3CFD0373C7/d/MagicDraw.app/../bin/magicdraw.properties
at java.io.FileInputStream.open0(Native Method)
at java.io.FileInputStream.open(FileInputStream.java:195)
at java.io.FileInputStream.<init>(FileInputStream.java:138)
at java.io.FileInputStream.<init>(FileInputStream.java:93)
at com.nomagic.launcher.Launcher.readPropFile(Launcher.java:714)