I think I had the same blank “Manage” area in my dashboard. I had recently installed a plugin called WordSpew. It was to be a frontpage ajax chatbox on my blog, but I couldn’t get it working, I got side tracked and forgot to deactivate and delete it, then I noticed my manage button went to a blank screen. I didn’t put it together with wordspew right away. But in troubleshooting I renamed my plugins folder and then the manage button was working again. Incidentally I had to reactivate about a dozen plugins, so I don’t recommend the plugins folder rename as basic troubleshooting. I’d say if you’re running into problems and you installed a plugin in recent memory that’d the plugin to deactivate, test then delete and test, as I’ve seen plugins wreak havoc simply to be in the folder unactive.
Hope this helps, let me know, k?
Daniel Vincent Kelley
https://www.lamegame.name
[email protected]