I have 2 separate sites operating on the WordPress 3.0.1 platform, my website and my blog. I have had no problems, I've been using plugins on the blog and none on my main. I upgraded from 3.0 to 3.0.1 with no problems. Then out of the blue, I'm having all kinds of problems on both. In Mozilla Firefox I can open a new post but cannot select the Body in order to write text (but can type in a title). The same goes for pages. Nor can I create new categories from the post, nor can I add tags. In IE I can type in the Body section, but text shows up white (making editing rather difficult). Having the same problem with categories and tags, also cannot insert images. Every time I try any of these in either browser it just says 'error on page' at the bottom. I have different themes by different authors on each. They are both running off the same domain but in separate directories.
I hope I've been detailed enough. Does anyone have any ideas? I couldn't find anything referencing the problem in the forums or documents, I apologize in advance if I missed something. Thank you.