can't get built computer fro the craft table

Title: can't get built computer fro the craft table

Hi, I'm trying to implement a quick demo for next week Devoxx4kids in Lyon, France.
I installed minecraft forge on a vanilla client and a vanilla server, then the computercraft mod.

Everything looks great and I can craft the computer… except that I can't take the built computer away from the table.
I think I saw an error like "There's no such ID"

I will try to post more logs or info if I can but I feel stupid with all my development knowledge in front of that game issue ;)/>

Edit: the server log shows:
[INFO] There is no such item with ID 1225

Start a new topic and ill answer

Thanks Saxguy. In the meantime, I started all over with a fresh install.
It is now working.
By the way, I couldn't create a new topic as I'm a new member.

Thanks, it was a quick answer, nice community here.

Split into new topic.

Saxguy99: You obviously did not read the rules of that topic. Do not post answers or replies to that topic. It is intended for new members only who cannot post.

I just wanted to thanks you both.
My issue is solved and I appreciate the community here.