Important note: This issue occurs only with the following AdminStudio for Symantec Editions:
AdminStudio Professional Edition with Virtualization for Symantec Edition
AdminStudio Enterprise Edition with Virualization for Symantec Edition
When a Basic MSI project is created in the InstallShield Editor, the three standard Virtualization Assistant Tabs: Microsoft App-V, VMware ThinApp, and Citrix XenApp are missing from the IDE (please see screenshot below) :