Game crashes...

[Phalene]

Here's the error message. Every time I log in I load up at RoB like normal and about a minute later it crashes.

haven.Resource$LoadException: Load error in resource paginae/build/fence(v1), from cache source backed by haven.JnlpCache@ac1511
at haven.Resource$Loader.handle(Resource.java:405)
at haven.Resource$Loader.run(Resource.java:368)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.RuntimeException: Weird version number on paginae/build/walls (29250 > 28498), loaded from cache source backed by haven.JnlpCache@ac1511
at haven.Resource.load(Resource.java:129)
at haven.Resource.load(Resource.java:159)
at haven.Resource$AButton.<init>(Resource.java:746)
at sun.reflect.GeneratedConstructorAccessor19.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at haven.Resource.load(Resource.java:997)
at haven.Resource.access$300(Resource.java:39)
at haven.Resource$Loader.handle(Resource.java:389)
... 2 more