Problem: dies uselessly if class API has syntax error
Problem: dies uselessly if class API has syntax error

Solution: handle load_file error cleanly

hintjens/zproject,twhittock/zproject,eburkitt/zproject,taotetek/zproject,twhittock/zproject,keent/zproject,hintjens/zproject,taotetek/zproject,asokoloski/zproject,paddor/zproject,eburkitt/zproject,zeromq/zproject,paddor/zproject,asokoloski/zproject,paddor/zproject,zeromq/zproject,taotetek/zproject,zeromq/zproject,keent/zproject