I have done a new install of WordPressMU 2.9.1. After the install I go to the the Pages tab, click on the About page that has already been created. I then click on the Preview, and the page errors out. I try re-saving the page, same error. I create a new test page, and still get the same error.
I delete all the files and directories. Do a new the regular WordPress 2.9.1, not the MU version. Everything works in the Pages section of the Admin page.
I did not see anything in the Forums about this, hopefully I didn't miss it. Has this been reported yet?? What is the solution??