andy10010

Deactivating all the plug-ins did work. Thanks. Reactivated one at a time after upgrade.
Just wish my upgrade from wpmu went as smooth as the 2.9x sites have.

I am having the same issue after upgrading to 3.0 from wpmu. The network is up and appears to be working but I cannot access the backend or pages.
Loading pages from subdirectory sites result in a 404 error. The only thing that does work is the edit button from Super Admin / Sites.
Can anyone tell me the code needed for the .htaccess file to do the mod rewrite?

I will try that. I have had problems with Event Calendar before. The beta version of the upgrade is broken. The dashboard is not working either.
As soon as I can reach my c-panel I’ll remove the plugins.