Hi,
I have made a minecraft 1.8.9 Server for my modpack and when i add RFTools the server crashes...
The mod works fine on Client side.
Here are the crash report:
http://pastebin.com/yG4s4DCW
and the fml log:
http://pastebin.com/FX2QyGKZ

I'll link Buildcraft and Botania in a moment.
I hope you can help me.

Sincerly king05

Edit:
here is the Botania issue:
williewillus/Botania#77
and here is the Buildcraft issue:
AlexIIL/Buildcraft_1.8_Issues#101
The crash report told me to contact you three authors...

ok i found the problem... it's because the server is running with java 7...

i just downloadet the server to try it on my local computer with java 8 and it works fine...