Update to catch new Exception on file access error
Update to catch new Exception on file access error

Fixes #830

PersonalGenomesOrg/open-humans,PersonalGenomesOrg/open-humans,PersonalGenomesOrg/open-humans,OpenHumans/open-humans,PersonalGenomesOrg/open-humans,OpenHumans/open-humans,OpenHumans/open-humans,OpenHumans/open-humans