every time I look at my new custom machines, wchih use gregtech CE parts, some specific items to not render in JEI:

The wires and the machine casing for whatever reason, im assuming because they are tile entities, but im not sure... I think this might be a modular machinery bug but im here in case:

JEI render:

What it should look like:

The repeating code:
java.lang.NullPointerException: null [17:34:34] [Client thread/ERROR] [CodeChickenLib]: CCL has caught an exception whilst rendering a block BlockPos: x:1, y:4, z:0 Block Class: class gregtech.common.pipelike.cable.BlockCable Registry Name: gregtech:cable Metadata: 0 State: gregtech:cable Tile at position Tile Class: class gregtech.common.pipelike.cable.tile.TileEntityCable Tile Id: gregtech:cable Tile NBT: {Covers:[],PipeMaterial:"aluminium",InsulationColor:7829367,x:1,y:4,ForgeCaps:{"nuclearcraft:capability_default_radiation_resistance":{radiationResistance:0.0d}},z:0,PipeType:0,id:"gregtech:cable",BlockedConnectionsMap:{}} You can turn off player messages in the CCL config file.

full log: here

codechicken lib issue: TheCBProject/CodeChickenLib#284

gregtech issue: GregTechCE/GregTech#1018

ok, apparrently this is an issue on Gregtech's side according to covers:

"This is just CCL stopping your client from crashing due to gregtech's model breaking. If someone in this issue train has questions about CCL's side of this interaction feel free to @ me there."

so that's good to hear its not an issue on your part.