Cant create sample grabber

[jagwac]

"Cant create sample grabber"

I get that message when I try to start a capture session.

Windows 2000 Pro
Logitech USB Quickcam with latest drivers

Now...

On my other machine, Windows XP with a 3com HomeConnect USB cam, not a problem at all. Works like a charm.

What does that message mean? Any ideas where I should start troubleshooting?
I set the configuration on both cams according to
Nullsoft Winamp TV - NSVcap Guide

thanks

*EDIT*
Just noticed that I only had DirectX 7. Going to upgrade that and see if that solves the problem.

*2nd EDIT*
Yep...that was it. Updated DirectX and it works now