Deluge reserving space

[Pneumonic]

So when I'm adding a torrent, deluge adds the folder to my download location and automatically reserves the space (let's say 50 GB). Now throughout this, it increases the size on disk amount without increasing size of the folder (let's say it's at 15 GB). However, I continue to get errors about there not being enough disk space, even though what has been reserved is already being counted towards the space on my hard drive. Now yes I could delete more stuff, but I've already deleted so much that I am not seeding much anymore. So I guess my question is why does it continue to tell me I don't have enough space, when that space is allocated and I still have about 10 GB left on that hard drive? Thanks!