Revert "Exit gracefully if backup file cannot be used"

This reverts commit 1d83b63adfc6a14a4a07f0fe31de9efbed1188f0.
Missing backup file no longer causes a python backtrace dump
handled more gracefully
Fixed bug from changing argument name
target -> backup-file. the change needed to be
reflected in the component files to get the right argument
remove executable permission from the backend files