I am running into roughly the same thing...
I have used the software on and off for some time, like others, got frustrated and put it away, spent more money and pulled it all back out again.
Running AHP 3.204 on an XP Home machine, P4 1.7 with 512
AHP itself has been bug-free for a few weeks now. Just got the VA11A in the mail today (found out the hard way that the VX10 I had didn't work) and reinstalled the drivers, as sent by an X10 staffer, plugged the thing in, and Voila, Video! I noted tho, that when using video it significantly slowed track-time of my mouse, and slowed the PC in general.
Now a few hours later, AHP is FINE until I click on a video screen to view a video (I don't have any recording, or capture set as of yet)
This basically crashes the pc (the swithcing to video) I can't even CTL-ALT-DEL so I use the Pull the Power Plug key and start again.
Suggestions to find the conflict anyone? I find it interesting it started later in the day today, initially worked so-so and now not at all.
Tom