Hey i luv that mod but it interfere with another one and i cant find any doc to change the ID's

Look at it

java.lang.RuntimeException: ModLoader has failed to initialize.
at ModLoader.ThrowException(ModLoader.java:1208)
at ModLoader.init(ModLoader.java:627)
at ModLoader.Init(ModLoader.java:1271)
at net.minecraft.server.MinecraftServer.s(MinecraftServer.java:106)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:323)
at cu.run(SourceFile:457)
Caused by: java.lang.RuntimeException: Exception occured in ModLoader
at ModLoader.ThrowException(ModLoader.java:1208)
at ModLoader.ThrowException(ModLoader.java:1213)
at ModLoader.addMod(ModLoader.java:118)
at ModLoader.readFromModFolder(ModLoader.java:848)
at ModLoader.init(ModLoader.java:603)
... 4 more
Caused by: java.lang.IllegalArgumentException: Slot 180 is already occupied by [email protected] when adding [email protected]
at tl.<init>(Block.java:212)
at tl.<init>(Block.java:239)
at BlockMithril.<init>(BlockMithril.java:16)
at mod_MysticOres.<init>(mod_MysticOres.java:103)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at ModLoader.addMod(ModLoader.java:104)
... 6 more

@Durolith
You can change the block ids using the properties file in the config folder.
see this forum post for details http://www.minecr...p__7993465