I can open the .dbr file from the DBReditor as you explain (file, open), but until yesterday i was able to open a dbr file with double clicking from the AssetManager.
I dont know why, since yesterday, i get this message error when i try to open the dbr file from the AssetManager.
The problem is if i open the .dbr file from the DBReditor, i’m not able to assign a moded texture. I can only choose the textures from the vanilla.