Error importing HHP project into Flare

[david]

Hello,
I'm using a trial version of Flare to test the 'merged project' functionality. I'm importing two non-Flare HTML Help projects (.hhp files) into Flare--one parent, one child. I imported the parent project without any trouble. However, when I import the child project, I get an error:

"Project Importer (internal error): Object reference not set to an instance of an object."

When I look at the project outside of Flare, it seems fine. Can anyone shed some light on what this error means, and what I need to do in order to import it into Flare?

Thanks!

[NealPozner]

Hello, David. Object Reference errors can be caused by a lot of things. Which software created the HHP originally?

[david]

The project was created by Doxygen. It's a bunch of topics auto-generated from header files.