XNA Animation Component Library

It means that you have some vertices in skinned meshes that are not attached to any bones. While this is often a critical fail case, it is not always. However, (and I didn't know this till recently), calling the XNA normalize method on one of these vertices thrwos an exception. In the next release, after I fix up the absolute mesh transform issues, i'll make it just log a warning.

If you want, you can edit the source code and just take out the Normalize method call. That should fix it.

Yes. Check out the "compiling the code from source" link off the front page faq.

To compile it into a dll, just right click on project, click properties, go to the application tab, and select "Class Library" as the output type.

In AnimatedModelProcessor, in the ProcessVertexChannel method, you can comment out the:
bwc.NormalizeWeights(4);
line.

Adding to the problems....

I am able to solve the boneweight problem this way, but a new error occurs.

Error loading "Content\gubbe". 
Cannot find ContentTypeReader Xclna.Xna.Animation.Content.SkinInfoCollectionReader, Xclna.Xna.Animationx86, Version=1.0.2.0, Culture=neutral, PublicKeyToken=null.

Any ideas?

Try adding:

Type myType = typeof(ModelAnimator);

Before you load any content. This forces the dll to get loaded into memory.