try deleting the preferences for Pages.
You will find it in your Home folder > Library > Preferences com.Apple.Iwork.Pages.plist
Move it out onto the desktop, and then launch Pages.
A new preference file will be created automatically.
I recently upgraded to Snow. Now when I use iwork 08 pages I cannot see the text. I have the background set to white and text to black. The only way I can see the text is by highlighting over it. Can anybody help?