have somebody repair that file and correct the code.
where do i find this somebody?
You'll have to either upgrade to the latest version, the latest version in v6, or hire someone to try to find the issue and fix it.
People who charge for support would be myself and SD or perhaps you could hire UBBSystems to do it if you wanted.
And yes, as Ruben said, we would all recommend that you at least upgrade to the latest .threads, those who preform upgrades would be SD and myself.