Crashing, but an awesome app!

I just puchased the full version of the app, but everytime I got to add a new weight to a class the application quits. I havent found any bugs from now, and hopping not to. Hope this can become an iPhone app as well. Can you also add a place to put an assignment that we have to complete everyday like a blog?

Cudamanpro about Schoolhouse, v3.3