Problems with updating Mod to 1.5.1: Mob Class not Loading

[Shadowbeast007]

I'm working in the Fossil/Archeology Mod Dev Team.

We currently try to update the mod from 1.4.7 to 1.5.1.

In Eclipse, the 1.5.1 version is running without problems, in MC I get the following bug:

 

java.lang.NoClassDefFoundError: fossil/entity/mob/EntityVelociraptor

 

at this Line(1253) in the Fossil class:

 

EntityRegistry.registerModEntity(EntityVelociraptor.class, "Velociraptor", 9, this, 250, 5, true);

 

Here is the Source Code:

 

https://github.com/Shadowbeast/FossilArcheologyTest/tree/master/fossil

 

I tried this for a while now and can't get any progress, maybe someone can help me with that?

Would be much appreciated.