Problems using Livesynth Pro with CWHS2

Having issues with Livesynth Pro within CWHS2.

First issue is that some Soundfonts play fine, some play intermittently. Some notes in one spot will play, others won't. I find that on tracks that have this issue, I can't get it to direct write to an audio track.

Can't get a 2nd occurrence of LiveSynth Pro to work at all. In the past when I've used it I haven't had these issues.

Thanks for all input.

Running XP Pro SP3, 4 gigs of ram, Core2 Duo 2.3 gig processor.