I just set up a server running FTB Builder's Paradise, and i wanted to set a chunk to always be loaded, and i was going to use the FTBUtilities "/chunks claim" and "/chunks load", but it just comes up saying "Can't modify this chunk!". I am server owner so i have the permissions to do it, im not sure why its not working. I tested in singleplayer and it worked just fine. If it matters im using bisecthosting.