Make sure the INF driver file is distributed in Atmel Studio projects that require them.

Demos/Device/ClassDriver/DualVirtualSerial/asf.xml

@@ -19,6 +19,8 @@
 		<device-support-alias value="lufa_xmega"/>
 		<device-support-alias value="lufa_uc3"/>
 
+		<build type="distribute" subtype="user-file" value="LUFA DualVirtualSerial.inf"/>
+
 		<build type="c-source" value="DualVirtualSerial.c"/>
 		<build type="c-source" value="Descriptors.c"/>
 		<build type="header-file" value="DualVirtualSerial.h"/>

Demos/Device/ClassDriver/VirtualSerial/asf.xml

@@ -19,6 +19,8 @@
 		<device-support-alias value="lufa_xmega"/>
 		<device-support-alias value="lufa_uc3"/>
 
+		<build type="distribute" subtype="user-file" value="LUFA VirtualSerial.inf"/>
+
 		<build type="c-source" value="VirtualSerial.c"/>
 		<build type="c-source" value="Descriptors.c"/>
 		<build type="header-file" value="VirtualSerial.h"/>

Demos/Device/ClassDriver/VirtualSerialMassStorage/asf.xml

@@ -19,6 +19,8 @@
 		<device-support-alias value="lufa_xmega"/>
 		<device-support-alias value="lufa_uc3"/>
 
+		<build type="distribute" subtype="user-file" value="LUFA VirtualSerialMassStorage.inf"/>
+
 		<build type="c-source" value="VirtualSerialMassStorage.c"/>
 		<build type="c-source" value="Lib/DataflashManager.c"/>
 		<build type="c-source" value="Lib/SCSI.c"/>

Demos/Device/ClassDriver/VirtualSerialMouse/asf.xml

@@ -19,6 +19,8 @@
 		<device-support-alias value="lufa_xmega"/>
 		<device-support-alias value="lufa_uc3"/>
 
+		<build type="distribute" subtype="user-file" value="LUFA VirtualSerialMouse.inf"/>
+
 		<build type="c-source" value="VirtualSerialMouse.c"/>
 		<build type="c-source" value="Descriptors.c"/>
 		<build type="header-file" value="VirtualSerialMouse.h"/>

Demos/Host/ClassDriver/VirtualSerialHost/asf.xml

@@ -1,5 +1,5 @@
 <asf xmlversion="1.0">
-	<project caption="Virtual Serial Host Demo (Class Driver APIs)" id="lufa.demos.host.class.cdc.example">
+	<project caption="Virtual Serial CDC Host Demo (Class Driver APIs)" id="lufa.demos.host.class.cdc.example">
 		<require idref="lufa.demos.host.class.cdc"/>
 		<generator value="as5_8"/>
 
@@ -10,7 +10,7 @@
 		<build type="define" name="F_USB" value="8000000UL"/>
 	</project>
 
-	<module type="application" id="lufa.demos.host.class.cdc" caption="Virtual Serial Host Demo (Class Driver APIs)">
+	<module type="application" id="lufa.demos.host.class.cdc" caption="Virtual Serial CDC Host Demo (Class Driver APIs)">
 		<info type="description" value="summary">
 		Virtual Serial Host demo, implementing a CDC host that can send and receive data to and from an attached device.
 		</info>