Class driver denies installation  
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Drivers >> Class driver denies installation

I've got a Firewire device that uses a pure-userspace handler and
Unibrain's stack. I want a simple INF file to field the insertion notice. I
created something approximating the "null driver" example, with an empty
DDInstall section.

If I declare this to be of class "Image", I get this error message from the
New Hardware wizard:

> The class installer has denied the request to install or upgrade this
> device.

What's the minimal INF file needed to get a user-mode image capture driver
to install?

Windows OS271