I use your mod on a server. When we place the chunkloader in the nether and no one is in the nether the chunkloader doesn't work anymore.

I guess this is more a missing feature then a bug. So could you please add this?

+1. It's not very useful if it can't work without players.

Strange, it worked for me with AE2 Spatial Storage (which is a dimension)
Try setting the size to 5x5, that worked for me