Mod version: 2.6.1.124

Here's a list of ore dictionary entries my mod reports back when TR is in the instance
gist/e05acb8b2feefa4916ae3e8d8cc04e4b

Normally, most mods wouldn't care, however MoreChisels registers a chisel for every gem and ingot in the ore dictionary, and generates it's registry names by passing ore dictionary names to the following method

public static String format(String input) {
    return input.replaceAll("[A-Z]","_$0");
}

This causes a crash as your entries result in my mod registering multiple identical registry names to the instance.

@modmuss50 leave this to me

Ive got it