Aja Io LA No video

Hi, could someone let me know if I have an incompatability issue. I am connecting via Firewire. Aja Pro Io control Panel shows "no video" when I have sources connected to SVid, composite and component. However, I am monitoring output from the Aja IoLA via composite out and I am able to swith between the source inputs via the IOControl panel. So the video sources are actually present in the Aja Io LA. But the Pro Control shows "No Video". Now, when I load FCP, The capture window shows "Preview Unavailable" and Pro Io Control becomes "inactive". Intuitively, this tells me that the video is not getting from the aja to the PC. Very confusing. Here is what I am using . .

Apple Dual 1.25 GHz Power PC G4
FCP v5.0.4
Pro Io Control Panel v1.2

Any help?