Every time I restart my game (playing singleplayer, might be the same case with server restarts) my energy conduits get bugged and won't transfer any power until I destroy a conduit and place a new one (maybe other block updates would work as well) ... I know that happened with other energy cables in other modpacks as well (especially with mekanism that happened every time and was always a real pain ... always had -128 million energy (or whatever the maximum of the cables is) in my cables after every restart) ... don't know if conduits have also negative energy in them, because you can't see how much energy they have the way you could with mekanism ... I also don't know if those cases are even related, but usually Ender IO conduits were very reliable so i guess it might be something with the newly added conduits (or the value of vibrant were just so low that i never noticed) ... not expecting it to get fixed that easily since I had that bug in many modpacks, but at least I want to mention it ... my first guess would be an integer overflow somewhere after every restart, but what to I know about fixing bugs

Update: Seems like the conduits still have energy in them after looking with the conduit probe ... it just can't get outputted in CEF's (other non-gregtech machines still get energy tho)

i cannot fix this