Adding a few mods

[Jams]

I'm having a problem adding these mods to tekkit classic. 

On this version of my client, I already have Mystcraft and Fossils and Archaeology working.

I'm trying to add: Better Farming, and Twilight Forest. I would also really like to put Foresty in, but all the 1.2.5 downloads are broken.

Thanks for your help.

[Melfice]

Contact the mod authors.

Though, it's likely they'll not help you as 1.2.5 is such an old version.

[Jams]

Contact the mod authors.

Though, it's likely they'll not help you as 1.2.5 is such an old version.

I actually already messaged the creator of Forestry to see if they could fix the downloads. I was mainly asking about better farming and twilight forest, I know that they can work. I just don't know how.

[Melfice]

Oh, I see. The downloads work, but you can't get the mods to work?
What's your problems, then?

I mean, "It doesn't work." is utterly useless, and leads to misunderstandings as above.

[Jams]

Oh, I see. The downloads work, but you can't get the mods to work?
What's your problems, then?

I mean, "It doesn't work." is utterly useless, and leads to misunderstandings as above.

Sorry about that. I'll start with the log from trying to add Better Farming 

java.lang.NullPointerException
    at mod_BuildCraftCore$EntityRenderIndex.hashCode(mod_BuildCraftCore.java:48)
    at java.util.HashMap.hash(Unknown Source)
    at java.util.HashMap.put(Unknown Source)
    at mod_BuildCraftEnergy.modsLoaded(mod_BuildCraftEnergy.java:43)
    at cpw.mods.fml.common.modloader.ModLoaderModContainer.postInit(ModLoaderModContainer.java:362)
    at cpw.mods.fml.common.Loader.postModInit(Loader.java:290)
    at cpw.mods.fml.common.Loader.initializeMods(Loader.java:629)
    at cpw.mods.fml.client.FMLClientHandler.onLoadComplete(FMLClientHandler.java:223)
    at net.minecraft.client.Minecraft.a(Minecraft.java:429)
    at net.minecraft.client.Minecraft.run(Minecraft.java:738)
    at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT c7cd1d3b ----------

Thanks a million for your help.