I got decently far into Botania. However when I did runic crafting I realised I could use comparators to check mana, I thought it applied to everything. I put down a Comparator next to a Botanical brewery and my game immediatly crashed. I replicated it 3 times and all had the same results [I ended up having to use MCEdit to remove the comparators]
Crash report: http://i.gyazo.com/209c46f2253e6ee878cc2b46dc781080.png
I tried it on a server and this happened: http://i.gyazo.com/6e046e11f2348b85ae71d820745bac7e.png
Botania r1.3-143
Dark Trilogy Modpack 1.0.5

Damn, I just copy pasted the code, will have it fixed, sorry :T