Looking at your pic I see a few potential issues:I got this already.
My problem is about energy.
The RF meter, in the middle, is not going up. I read on ftb wiki that the assembly table doesn't need to be powered straight, but the the laser need and the laser will work on the table, once it is powered.
But as i said, it's not working.
1. You are using railcraft/buildcraft engines for power, with no power transport pipes, you just have it up against the laser. These engines produce bursts of power instead of a steady output, so you may want a couple of engines connected to the laser via pipes to even that out.
2. You have a single laser and engine, that is gonna be really slow.
3. I believe either the laser, assembly table, or both can be disabled via redstone. Since your engine is placed right next to both, and you are providing it a redstone signal, that could be interfering. Again, use some pipes and move the laser and table away.
Also, the table ejects its results into an adjacent inventory or if there is not one onto the ground. Make sure you put a chest next to the table.
Morden