From SAGE knowledgebase:
The Sage MAS 90 or 200 launcher starts minimized when launched
Entry Type: Informational
Product: Sage MAS 90 ERP, Sage MAS 200 ERP, Sage MAS 200 ERP - SQL Server Edition
Application: Library Master
Version Reported: 3.71
Subject: The Sage MAS 90 or 200 launcher starts minimized when launched.
Possible Resolution:
If the Launcher is not visible, locate the Sage MAS 90 icon in the system tray (lower right corner).
Double-click the icon and the Launcher should display.
From the Launcher, select View and verify that the Start Minimized option is not checked. If it is checked, select the option to disable.
Restart Sage MAS 90 or 200 for changes to take effect.