Problem: does not fail cleanly when <include> fails
Problem: does not fail cleanly when <include> fails

Solution: allow load_file to fail and catch error explicitly

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