Im not really expirienced on installing mods, so i will try to leave some details:
Buildcraft version-7.99.5 ! game crashes after installing buildcraft and leaving no
hints other than the crash report. Ive tried the mod load alone removing any mods
from the mods file and surprisingly it works.
My guess is that there is a mod interaction giving problems.
These is my last crash report:
crash-2017-07-14_15.06.37-client.txt

Thanks for the report! This is actually a Mekanism issue, see: mekanism/Mekanism#4513 for details. Duplicate of #3716