I managed to restore the stock ROm following your procedure in a Window Machine. I then flashed the custom ROM with ODIN and got the following output:
<ID:0/005> Added!!
<OSM> Enter CS for MD5..
<OSM> Binary Check MD5.. Do not unplug the cable..
<OSM> Please wait..
<OSM> Checking MD5 finished...
Thank you. I managed to restore the Stock Rom following your procedure in a Window machine and I then flashed the custom ROM using ODIN. Everything went fine and I got the following output from ODIN:
<ID:0/005> Added!!
<OSM> Enter CS for MD5..
<OSM> Binary Check MD5.. Do not unplug the cable...