For those who did not understand what Slate521 actually said, he said: "It would be lucky for you to get this build back since saving another persons build is generally looked down upon."
A statement I agree with.
I got lucky with an old abstract DM I made when I first started playing. A player that hadent played Blockland in years came back and loaded it up randomly with me on the server unaware I was the builder. I was so happy to see it again.
I hope you find your build.