Remote Desktop: Unable to create custom client installer after updating to OS X Lion v10.7.3 or 10.7.4

After updating to OS X Lion v10.7.3 or 10.7.4, Apple Remote Desktop 3.5.1 users may be unable to successfully create a custom client installer using the Create Client Installer choice in the File menu. When attempting to create the custom installer, the application may display an alert stating "An unexpected error occurred while creating a custom installer."