BtSync wasn't enabled. Here's a bunch of missing stuff.

Models/Container/Container.mtl

@@ -1,13 +1,8 @@
-# Blender MTL File: 'None'
-# Material Count: 1
-
-newmtl Container:defaultMat
-Ns 96.078431
-Ka 0.000000 0.000000 0.000000
-Kd 0.000000 0.000000 0.000000
-Ks 0.500000 0.500000 0.500000
-Ni 1.000000
-d 0.000000
-illum 2
-map_Kd Texture.png
-map_Bump NM.png -bm 1
+newmtl Container:defaultMat
+illum 4
+Kd 0.00 0.00 0.00
+Ka 0.40 0.40 0.40
+Tf 1.00 1.00 1.00
+map_Kd Texture.png
+bump NM.png -bm 1
+Ni 1.00