Interestingly, I tried to run the RT app that I built without copying all the dimg into /Applications. By doing this I can get a UI in which fonts looks crisp and clear, but nothing works - no buttons, no boxs or dialogues, etc (not surprising as it is essentially an incomplete install). But there is some text and it certainly appears as though what I’ve built RT against on my system makes it look visually correct compared to how the pre-built looks when running on the same system. I don’t know where it’s expecting to load /org/gtk/libgtk/icons/16x16/status/image-missing.png from. This seems the cause of my crash. I see this file it in two theme directories. I don’t what governs RT to look for this file and in which location(s). If somebody has a working build and install image that they generated themselves, I would be very grateful to see the layout with respect to the gtk icons, etc, so compare with my own. Thanks.