I built this plugin for the amiko alien 2 and had the same problem. To overcome it, I created boxbranding.py in the plugin folder with the following contents:
def getImageDistro(): "sh4"
The new CrossEPG looks for specific images/boxes (OpenVIX + another that I forget), so you can leave "sh4", or change it to whatever you want.
I'm not a programmer, so don't know if this is the best way to do this, but it seemed to work.