Ok, so these lamps are fake. I'm searching for a functioning one to save space. Well, I'll continue to look for texture packs. Thank you for your help.
Well, the lamp block is as big as the glowstone, it doesn't make any difference. I need a small good looking ceiling lamp as shown in the posted project.
Noone? It's simply about why does MCPatcher tell me that SingleplayerCommands, Zombe's and TooManyItems can't go together although they are widely used together?
Because my individual texture pack is for 1.3.2 and I don't know anymore where I got the different textures from to create a new texture pack. Apart from that, I think that the problem is only because of the mods, not because of the mc-version.