I can't open my site with SharePoint Designer 2010.
SharePoint and Foundation installed on Windows 2008 Standard Server.Designer on Windows 7.
I've spent a good deal of time researching and troubleshooting already and have checked the following:
Enable Client Integration is set to Yes for the web application.
All checkboxes are checked under the site collection's SharePoint Designer Settings.
Connecting to the Central Administration website from SD works no problem.
I can browse the site in the SD Open Site window, but when I actually click open, I get the error.
Logged in and tried as the SharePoint service account, the domain admin account, my account which is an admin, and the site collection admin account.
Creating a new site collection in the same web application and trying to connect to it yields the same error
Compared all the site settings in IIS Manager between the Central Admin site and the web application running on port 80
How can I get this basic SharePoint functionality working (not that anything in SharePoint is basic from an administrative sense...)?