Wrap intra_copy in the try except for deleting pre-existing files
Wrap intra_copy in the try except for deleting pre-existing files

RCOSDP/waterbutler,rdhyee/waterbutler,chrisseto/waterbutler,hmoco/waterbutler,icereval/waterbutler,cosenal/waterbutler,TomBaxter/waterbutler,Ghalko/waterbutler,felliott/waterbutler,kwierman/waterbutler,CenterForOpenScience/waterbutler,rafaeldelucena/waterbutler,Johnetordoff/waterbutler