Put the new 1.8.9 generators mod, and bdlib. starting my modpack, and crash when loading.
Crashlog:

http://pastebin.com/m2dEUuPe

Probably accidential PressurePipes dependency. You will need to add this or wait for a fix.

Thanks!

Here's another crash report:
http://pastebin.com/mdiCq9dZ

Should be fixed in next build.

The soft-dependency used to work in 1.7.10 in the exact same way, but looks like something has changed in how forge/mojang load classes and it broke something, this is super annoying.