I have used and enjoyed Mekansim for a very long time. Recently my Minecraft stops responding every time I look up "Mekanism" in NEI, so there is no crash log unfortunately due to it making my program not respond. I updated to 9.0.2 and it did not help sadly.

@aidancbrady you should make "false" by default in the config :(

Change
B:PrefilledFluidTanks=false
B:PrefilledGasTanks=false
B:PrefilledPortableTanks=false
to false in Mekanism.cfg

Please @aidancbrady add this config

You just need to use it/change the value!