I'm trying to update to the latest Observium using svn update, but this error is thrown:

svn: Checksum mismatch while updating 'includes/polling/os/lancom-l310..inc.php'; expected: '1879bc17ba610d3114887696778b5fca', actual: '7c8bf78f7ae1d6d9b0a43d1620a126b1'

I tried removing the file in question and svn'ing again, but same result.  Does anyone have any suggestions on how to resolve?  Thank you.