Exception thrown without Media* and with Tag

[wixbot]

If you have a Product with no Media or MediaTemplate element but with a swid:Tag element and no other files, Light throws an exception:

    C:\Program Files (x86)\WiX Toolset v3.8\bin\Light.exe -out "c:\users\barnson\documents\visual studio 2013\Projects\SetupProject3\SetupProject3\bin\Debug\SetupProject3.msi" -pdbout "c:\users\barnson\documents\visual studio 2013\Projects\SetupProject3\SetupProject3\bin\Debug\SetupProject3.wixpdb" -cultures:null -ext "C:\Program Files (x86)\WiX Toolset v3.8\bin\\WixTagExtension.dll" -contentsfile obj\Debug\SetupProject3.wixproj.BindContentsFileListnull.txt -outputsfile obj\Debug\SetupProject3.wixproj.BindOutputsFileListnull.txt -builtoutputsfile obj\Debug\SetupProject3.wixproj.BindBuiltOutputsFileListnull.txt -wixprojectfile "c:\users\barnson\documents\visual studio 2013\Projects\SetupProject3\SetupProject3\SetupProject3.wixproj" obj\Debug\Product.wixobj
    Windows Installer XML Toolset Linker version 3.8.1020.0
    Copyright (c) Outercurve Foundation. All rights reserved.
light.exe(0,0): error LGHT0001: Key cannot be null.
    Parameter name: key
    Exception Type: System.ArgumentNullException
    Stack Trace:
       at System.Collections.Hashtable.get_Item(Object key)
       at Microsoft.Tools.WindowsInstallerXml.AutoMediaAssigner.ManuallyAssignFiles(Table mediaTable, MediaRow mergeModuleMediaRow, FileRowCollection fileRows)
       at Microsoft.Tools.WindowsInstallerXml.AutoMediaAssigner.AssignFiles(FileRowCollection fileRows)
       at Microsoft.Tools.WindowsInstallerXml.Binder.BindDatabase(Output output, String databaseFile)
       at Microsoft.Tools.WindowsInstallerXml.Binder.Bind(Output output, String file)
       at Microsoft.Tools.WindowsInstallerXml.Tools.Light.Run(String[] args)
    The command exited with code 1.

Source is from a Dev12 template with modifications:

<?xml version="1.0" encoding="UTF-8"?>
<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi" xmlns:swid="http://schemas.microsoft.com/wix/TagExtension">
    <Product Id="*" Name="SetupProject3" Language="1033" Version="1.0.0.0" Manufacturer="asdf" UpgradeCode="00666089-eb3d-4e46-8cd3-1ccf0e610871">
        <Package InstallerVersion="200" Compressed="yes" InstallScope="perMachine" />

    <swid:Tag Regid="regid.2008-09.org.wixtoolset" Type="component" />
        <MajorUpgrade DowngradeErrorMessage="A newer version of [ProductName] is already installed." />
        <!--<MediaTemplate />-->

        <Feature Id="ProductFeature" Title="SetupProject3" Level="1">
            <!--<ComponentGroupRef Id="ProductComponents" />-->
        </Feature>
    </Product>

    <Fragment>
        <Directory Id="TARGETDIR" Name="SourceDir">
            <Directory Id="ProgramFilesFolder">
                <Directory Id="INSTALLFOLDER" Name="SetupProject3" />
            </Directory>
        </Directory>
    </Fragment>

    <Fragment>
        <ComponentGroup Id="ProductComponents" Directory="INSTALLFOLDER">
            <!-- TODO: Remove the comments around this Component element and the ComponentRef below in order to add resources to this installer. -->
            <!-- <Component Id="ProductComponent"> -->
                <!-- TODO: Insert files, registry keys, and other resources here. -->
            <!-- </Component> -->
        </ComponentGroup>
    </Fragment>
</Wix>

Originally opened by barnson

[wixbot]

Originally changed by barnson
AssignedTo set to bobarnson

[wixbot]

Investigate fix to see if it fits in v3.8.

Originally posted by barnson

[wixbot]

https://wix.codeplex.com/SourceControl/network/forks/bobarnso/wixdev/contribution/5555

Originally posted by barnson

[wixbot]

Originally changed by barnson
Resolution set to fixed
Status changed from Open to Resolved