I haven't been too active in the forums of late but I have my SilverStripe project.
I presently have SilverStripe v2.3 installed with a modified Terrafirma theme. The gallery works just fine in that it displays my thumbnail images correctly.
However, the issue I have relates to Light Window - It just doesn't appear to work. Clicking on an image brings up a new page rather than displaying the image inside the Light Window. I am using the Gallery modules rather than the Image Gallery Module.
I seem to recall that this was broken in pre-release versions of v2.3 but it still appears to be an issue. Is there a workaround for this?