Custom Modpack item ID issue

[doogle]

Hi everybody.

I've been making a mod pack for my friends and myself to play and I've checked the item IDs for all the mods to make sure they're not conflicting but I've come to a slight problem with them.

I have the Forestry mod and SGCraft installed and Stargate items seem to be overwriting some forestry items.

 

For example, in the forestry mod, it has copper ingots as item 31740, and the SGCraft mod has stargate controller crystals also as item 31740, yet when I dump the items from NEI to see what is free and what is taken, slot 31740 is set as null and the stargate item appears at 31997 and the copper ingot for forestry doesn't appear at all!

 

Any idea what could be going on with my configs to cause the number shift and missing items?

 

 

[plowmanplow]

Item IDs in game are usually up-shifted by 256. What you are seeing is that SG is overwriting RailCraft's item ID so you don't see RC's at all. You need to fix the conflicts.

[doogle]

Ah right, thanks, that'll probably be why when I try changing the ID to a higher number the game just crashes out, as they are being shifted too high.

I'll see if I can find some lower down ID numbers that I can use then