I don't normally participate in the IC2 classic thread, but I see two additional problems besides the inputs/outputs being backwards (outputs generally come first in Minetweaker scripts):
1. Outputs cannot be ore dictionary entries - they have to be specific items. In most cases, machine recipes don't allow the ore dictionary for inputs either. You can iterate over the values in an ore dictionary entry, though (see http://minetweaker3.powerofbyt…alues_in_an_oredict_entry)
2. Shouldn't you be inputting multiple ingots per compressed plate?
Thanks for your help. Using the specific items for the output fixed the problem and I think I'm using 1 ingot to 1 compressed plate as I have galacticraft in quick mode.
Here is a copy of the working code for anyone else who wants it:
import mods.ic2.Compressor;
Compressor.addRecipe(<GalacticraftCore:item.basicItem:6>, <ore:ingotCopper>);
Compressor.addRecipe(<GalacticraftCore:item.basicItem:11>, <ore:ingotIron>);
Compressor.addRecipe(<GalacticraftCore:item.basicItem:9>, <ore:ingotSteel>);
Compressor.addRecipe(<GalacticraftCore:item.basicItem:7>, <ore:ingotTin>);
Compressor.addRecipe(<GalacticraftCore:item.basicItem:8>, <ore:ingotAluminium>);
Compressor.addRecipe(<GalacticraftCore:item.basicItem:10>, <ore:ingotBronze>);
Compressor.addRecipe(<GalacticraftCore:item.meteoricIronIngot:1>, <ore:ingotMeteoricIron>);
Compressor.addRecipe(<GalacticraftMars:item.itemBasicAsteroids:6>, <ore:ingotTitanium>);
Compressor.addRecipe(<GalacticraftMars:item.null:5>, <ore:ingotDesh>);
The only issue is the compressed copper recipe overrides the dense copper plate recipe. A workaround could easily be made using the same method as above, but as I use the big reactors mod, I'm not planning on using the IC2 reactors, so it isn't an issue for me.
Thanks again for your help MauveCloud.