Don't you best think this question is asked in-thread on whichever guide you followed? Says "error" is meaningless without context (what you were doing) and specifics (the exact error/manner it presented itself). Please re-ask in the proper thread.
Edit: read your previous post that I've edited. Also, be aware Dane (not your model, but make) has a 1.5tb drive on gbatemp's USB compatibility list that is classified as "incompatible," this may be true for your 500gb Dane drive as well.