EWS 1307 will not install on Macbook Air 11.6 running Snow Leopard 10.6.4.
I've patched Office 2008 to version 12.2.7.
When I try to roll EWS, I get an error saying something like "Entourage Web Services Edition cannot be installed on this disk because it can't locate a compatible version of Office" (sorry for the paraphrase but the computer is not available right now).
I've tried uninstalling and reinstalling Office.
I've tried rebooting in Safe Mode and installing, as well.