BTW: I am preparing a major upgrade to QFC, that includes:

1. A dynamic plug-in class (i.e. a factory container that allows you to simply invoke a class constructor; under the 
covers this class will load the appropriate DLL, using a user supplied method to turn class name into a file name).

2. An adaptive partitioning class, that provides a basic framework for programmatic control/monitoring of temporal 
partitions.

3. A SAT class that takes care of a lot of the trickiness of dynamic tracing.

Look for an announcement on the project page around the middle of July...

I found the problem.

I had gotten the Hot Eclox plug-in. This plug-in is only for 3.3 and higher.

Momentics is 3.2. Disabled Hot Eclox and now I can properly click on .doxyfiles.