i ran Sangar's holo-flow program and got an error on line 6: component.hologram does not exist.
You need this block http://ocdoc.cil.li/block:hologram_projector adjacent or connected with wires to the computer case.
LoL.. using holo program or command without hologram projector
No, I had one next to the case, i'm not stupid
Hologram projector can be only connected from a bottom side.
Yeah, what Fingercomp said is probably it. Make sure to connect it from the bottom (tip: in general, if a cable doesn't visually connect to a side of a block component, nothing will).
@GiantNuker
Maybe it can work above the case, rather in the side
@Fingercomp Thanks, I had it next to the computer :P