Guys, you have to remember. This is a new Mod-pack. It will not be perfect. There are errors with the pack that only some people can get so having the 30k+ members of the FTB play the pack has brought some really big problems up to my attention. I am used to fixing maybe one or two bugs every now and again and pumping out the fixes for them with-in hours. Now that the pack has this huge player base, as i said, there are TONS of bug reports. I am working on them as fast as someone who is supposed to be on vacation can fix them. This weekend I return home and can really provide some support for you guys, but until then, please read other bug reports before posting your own. 90% of these posts are the same bug. They way I see it now, Meteor Mod is causing a Major Crash (Working On it), MAC users are still having a launch issue with the pack (Not my fault, its the launcher, and if you read the forums you know they are working on it. All i can say is why are you gaming on a MAC? lol). All the other bugs are tiny issues like mellenaire villagers not loading the first launch. I'm sorry guys but I can't just fix an issue like that, most the time its your PC's fault. I am working on v6.0.0 as fast as I can, but JUST SO YOU ALL KNOW, it will most likely have its share of problems.
The vanilla ore shortage is caused by all the other ores from the other mods overwriting the vanilla ores. If you fix your configs so only 1 type of copper, tin, silver, and lead spawn you will get more vanilla ores.
That is not how it works, please don't post solutions to problems if you aren't 100% sure. Each ore has a spawn rate, there is plenty of room for all types of ores. Use the forge lexicon or change the config yourself if you have a problem with mutli-ores. Its a preference, and sorry for you, mine is to include all the ores in the world generation. Also, as I have said before, Iron Ore's spawn rate changes based on the biome, some have very little, some have tons. v6.0.0 I will up the rate of Iron Generation, but not by a lot, and guess what it will be based on the biome.