Thanks for reply and I'm glad I'm not on my own with this issue.
The reason I mentioned video glide is just to clarify that it's working and to try and cover suggestions that others may post, just time saving really, you mention that it worked with V2.5.4? That may be worth checking out though I don't think I havre a copy of that version any more, will need to check. It's weird that it works in other apps but not modul8, I've been using a USB capture device but was trying to slim down tha amount of kit I had to carry and thus reduce set-up de-rigging time.
LAst night I didn't check if modul8 is looking at the s-video input instead of the composite (despite setting it to use composite both in Modul8 and the DC30 settings).
In terms of asking for support, I thought that this forum was the place to go