You must be using a build you made yourself from the source code repository because the latest official release is 2.3.7.6.
That error message is shown when the code is at a higher version than the database. If the setup page doens't solve it it means you are missing an upgrade script so it can't update the db to the same version as the code. The very latest version in the default branch of the repository is 2.3.7.9 and the corresponsding scripts exist. I would pull the latest changes then do HG Update to update your working copy, rebuild the solution and visit setup page again.
Always use default branch.
Hope that helps,
Joe