On forge 1286 on an dedicated server using version ExtraBiomesXL 3.16.0. Some biomes from ExtrabiomesXL are broken. (I use ExtrabiomesXL together with Natura and Thaumcraft.)

It seems like sometimes the ExtrabiomesXL biomes spawns correct and sometimes they are naked of everything except the vanilla blocks. And I can't find anything related to this in the forge logs.

Most apparent is the Redwood forest that shows up as huge open plains with barely any vanilla ores at all. Mods that adds ores will not spawn in these.

You are using a version of Forge that is not recommended, we specify on the OP Forge 1231. In addition we will need to see your Forge log in order to see if it is in fact a problem with EBXL.

We do nothing to change ore spawn and as no one else has reported an issue such as this I am thinking this is not something we are causing. But as I said, we will need to see your Forge log to determine this.

I found out that if I use the tool "Admin commands toolbox" mod on an dedicated server via the console. The problem was triggered.
Here is the edited log if there is something i missed, but except for the uninformative worldleaks there is nothing sticking out to read. I'll see if the mod creator ProfMobius knows about this.
http://pastebin.com/ZxJJhzjc

/Sorry for taking up your time and thanks for an awesome mod.