I am trying to manually enter a new keycode for CDP into LD 143. I type KMAN and it prompts me to enter Line 1 of my keycode. I enter Line 1 ok, then it prompts me for Line 2. Well, I enter line 2 and it comes back with a Checksum Error. I made sure I did not mess up on my multiple attempts but it will not take it. SO I try to do a KUPL and paste my keycode in, this also comes back with an error. I got these keycodes from Nortel. The disk set is in the mail but I needed this option ASAP. Is it possible that the keycode was generated incorrectly and even if I wait for the disk that it will STILL not work?