Yes did all that. When I try and flash clockwork mod recovery it goes through then says "error occurred while attempting to run privileged commands"
The last time that error happened to me it was because I did not click "allow" with Su. When u try to flash clockwork and it downloads there is a popup from SU app asking whether u will allow access. It stays on screen for a few seconds. If u dont click remember and allow it gives that error. hope this helps.