Fix default versions

src/coffee/constants.coffee

@@ -10,11 +10,11 @@ exports.DefaultMods =
     minecraft:             { defaultVersion: '1.7.10' }
     applied_energistics_2: { defaultVersion: 'rv1-stable-1' }
     buildcraft:            { defaultVersion: '6.2.6' }
-    enderio:               { defaultVersion: '2.2.7.235' }
+    enderio:               { defaultVersion: '2.2.7.325' }
     ic2_classic:           { defaultVersion: 'none' }
     industrial_craft_2:    { defaultVersion: '2.2.663' }
     railcraft:             { defaultVersion: '9.5.0' }
-    thermal_expansion:     { defaultVersion: '4.0.0B6-23' }
+    thermal_expansion:     { defaultVersion: '4.0.0B8-23' }
 
 exports.Duration = Duration = {}
 Duration.snap    = 200

src/coffee/models/storage.coffee

@@ -46,7 +46,7 @@ module.exports = class Storage
 
     _loadProperty: (key, model, property, defaultValue=null)->
         loadedValue = @load "#{key}:#{property}"
-        if value?
+        if loadedValue?
             value = JSON.parse loadedValue
         else
             value = defaultValue