Deployment issue using mageui.exe

My windows form application is written in C# and compiled with VS2003.
When using mageui.exe to create application and deployment manifest, I
get this error:

System.Deployment.Application.InvalidDeploymentException
(InvalidManifest)
- Invalid <entryPoint> specification.

When I import the code into VS2005 Beta 2 and use Publish, the
application launches just fine. The only difference I can see in the
application manifest is in the entry point.

MAGE:

<entryPoint>
<assemblyIdentity name="fsnncClient" version="1.0.2140.20351"
language="neutral" />
<commandLine file="fsnncClient.exe" parameters="" />
</entryPoint>


VS2005 Publish:

<entryPoint>
<assemblyIdentity name="fsnncClient" version="1.0.2140.20351"
language="neutral" processorArchitecture="msil" />
<commandLine file="fsnncClient.exe" parameters="" />
</entryPoint>


In mageui, I do have the 'msil' selected, but it never shows up in the
manifest. What am I doing wrong? I really need this to work with the
VS2003 code not the beta code.

Thanks for any help.