Server can't update

I haven’t used my server since the new update, and it isn’t working.
Every time someone tries to join it it says “server uses different class tables”. I know that this means that I have to update it, so I did. Upon doing so, I joined again, and it still did not work.

I have tried connecting to other servers on my client computer, so that one is not out of date.

Anyone else have this issue, or a solution?

try deleting orangebox/bin

Uh, don’t do that. Delete InstallRecord.blob, and try updating again.