Cid wont take faded crystal

Platform: xbox 360 and windows
ISP: idk
Type of Internet Connection: road runner
Internet Connection Speed: idk
Date & Time: 5-22-15
Frequency: every time
Character Name: Prride
Race: Mithra
World: Bahamut
Main Job: THF
Support Job: WHM
Area and Coordinates: Metalworks Bastok
Party or Solo: Solo
NPC Name: Cid
Monster Name: na
Steps:
1. Im on Bastok mission 2-1. I got a faded crystal from the crag.
2. No matter how many times I try in different ways, Cid still wont take my faded crystal.
3. This should not matter but I have finished COP.
<*Add more steps if necessary.>

I couldn't reply to this posting.
I followed wiki guide exactly. I gave gate guard 5 light crystals and traded a fire crystal to the crag of dem and got a faded crystal. I then tried to trade faded crystal to Cid but he wouldn't take it.

Can you list all the steps you've done so far? It's not uncommon for folks to be following a guide and skip talking to an NPC.