I am having a great deal of trouble with this. I have moved my wordpress and am now hosting it... I'm not sure if that has anything to do with the problem, I just thought I should share that as it may be important. The site, however, displays correctly and I am able to make new posts and such, so again, I'm not sure if that is worth mentioning.
Anyways, I noticed that when I try to install a new plugin, following the clicking "activate", the section of the screen where the editor should be is blank.
Also, I've noticed that if I attempt to "activate" certain plugins it causes other previously activated plugins to not display the editor either. I've chalked this up to a conflict between plugins as when I "deactivate" a newly activated plugin, the editor will display for the plugins it did not display for previously. Does that make sense? I think I confused myself. :)
Any help is much appreciated!