Better World Gen 3 incompatibility

[Nerudian]

Hi, I'm new here, but I'll try to keep this as short as possible.

I'm using the DW20 v4 modpack, and I've installed a few small things, treecapitator, nether ores, powerconverters, nothing too big or fancy.

My only problem is Better World Gen 3 and the BigTrees plugin for said mod. I downloaded the forge version for 1.4.6 and put it in the jarmods section, and it not only would not load any of them, but when I tried to check again, it had deleted the BWG3 zip from the folder.

Has anyone run into the same wall, and if so, possible solutions?

EDIT: Links:
Better world generation 3
Bigger Trees

 

[Zmaster27]

Big trees does not appear to be forge based, which is required for FTB

Plus it looks like it may have some issues with biomes from ExtrabiomesXL just a hunch though

 

[Nerudian]

huh... that's weird, the mods say they don't have any problems with ebxl

Also, even if bigtrees doesn't work, what about BWG? It even has a forge compatible version, and that's the one that's not even appearing

 

[UindoOokami]

I ran into the same problems. I even tried updating forge and it just vanished. I think the FTB launcher wont add jar mods. a glitch?

edit: I tried updating the .jar directly and the files still vanished.