Level Editors bug?

Hi everyone. I think I’ m encountering a bug. When I Name my level and Hit Create, it gives me this:
" Error saving Backwoods Charge 401". Is this a bug?

EDIT: It happened when I tried to save level, but happened again the next day. Why did that happen?

What happens if you give the level a different name? Maybe that name is taken and it’s just giving you a bad error message.

It works fine for some reason. Was it because i had been on the computer for a long time? Or because i need more memory on it? Sorry for the late response