Image import was freezing when an external image folder was not in use. This was because the import sequence was attempting to list files in an external directory that either didn't exist or it didn't have permissions for. External files should not be checked when an external image folder is not in use.
Image import was freezing when an external image folder was not in use. This was because the import sequence was attempting to list files in an external directory that either didn't exist or it didn't have permissions for. External files should not be checked when an external image folder is not in use.
closes #80