I have the same problem. The game crashes when I try to get in. I also have java 64-bits and the error message is the following :
java.lang.RuntimeException: Delayed error in resource gfx/terobjs/arch/timberhouse-door (v15), from forking source backed by HTTP res source (
http://www.havenandhearth.com/hres/)
at haven.Resource$Pool$Queued.get(Resource.java:338)
at haven.Resource$Pool$Queued.get(Resource.java:307)
at haven.Session$CachedRes$Ref.get(Session.java:141)
at haven.Session$CachedRes$Ref.get(Session.java:134)
at haven.Radar$Queued.resname(Radar.java:217)
at haven.Radar$Queued.ready(Radar.java:205)
at haven.Radar.tick(Radar.java:60)
at haven.OCache.tick(OCache.java:62)
at haven.Session$Ticker.run(Session.java:216)
Caused by: haven.Resource$LoadException: Unsupported flags in fastmesh: 13
at haven.FastMesh$MeshRes.<init>(FastMesh.java:429)
at sun.reflect.GeneratedConstructorAccessor9.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at haven.Resource$LayerConstructor.cons(Resource.java:723)
at haven.Resource.load(Resource.java:1599)
at haven.Resource.access$600(Resource.java:39)
at haven.Resource$Pool.handle(Resource.java:383)
at haven.Resource$Pool.access$1100(Resource.java:284)
at haven.Resource$Pool$Loader.run(Resource.java:519)
at java.lang.Thread.run(Unknown Source)
Please help me ! ♥