Hello, I use a GL2 to capture using Screenblast and for the most part it works fine most of the times. Others times I have to make several attempts to get SB to recognize the camera. Sometimes shutting the camera off and on while the vidcap is open will fix the problem, although you have probably tried that already. Another thing you can try and it worked for me--open vidcap and select options and then preferences and then disk management and designate a path for your video capture. The last time I had a problem with capturing was because I had deleted a folder from my hard drive that I had designated as the capture folder while working on a project. The error message was pointing to a failure of SB finding the camera when all along the problem was the folder had been deleted. Hope this helps.
dtudela