As the title says, I switched it to singleplayer temporarily then added it back - now server doesn't let me on and when it closes cause of no one being on, then instead of saying "Closed", it says "Crashed"
"This world was saved with mod ctm which appears to be missing, things may not work well" (appears 23 times but with different mods)
I don't really have a backup so is there any way of fixing this?
