Bukkit

After the first time I ran a fill command...and let it go for a little while...it made it up 3.8%, I restarted the server, and ran Fill again...and it started at 3.8% and made it to 12.5%.

Then I restarted again....and it started over at 3.8% again.  Now every time I have to restart, it always starts back over at 3.8% and I can never gain any ground beyond that.

I have set the fillautosave from 20 to 60 in attempts to save anything, but every time I have to start back over at 3.8%.

Am I missing something?

I'm also having this issue it seems that when it tries to save it is causing an error. This is what the console is giving me:

https://pastebin.com/mqRViQyw

 It also seems that no mater what I set the autosave value to once it gets to around 20% it causes the error.