This isn't an answer to your question but it should help you author the installer...
First, a few things you should consider:
- RegAsm.exe is probably not licensed for distribution in the way you are doing it.
- Components generally should have zero or one File elements. Read about component design and "Component Rules"; start here.
- The registry should be changed through standard Windows Installer tables and actions, not by executables that operate outside of Windows Installer's tracking. Whenever possible, the registry changes should be in the same component as the file being registered—that way, they are sure to come and go together.
WiX's heat
tool will generate authoring for .NET assemblies. If you are using Visual Studio and/or MSBuild to run WiX, you can use the HarvestFile or HarvestProject tecnhiques (see the documentation).
Or, via the command-line:
heat file ..\ClipboardActiveX\bin\Release\ClipboardActiveX.dll -out ClipboardActiveX.wxs
or
heat project ..\ClipboardActiveX\ClipboardActiveX.csproj -out ClipboardActiveX.wxs