When I first upgraded to 2.5 I had no problems, but now the uploader gives me a blank screen when I click on the insert image link. It uploads the image and everything it just won't insert it. Also when I use the insert/edit image button (not in the uploader) it will add the image but when I save the image disappears.
I did deactivate all plug-ins and tried it but it still didn't work, so it's not a plug-in problem. I also re-uploaded the upgraded just in case there was a bad file, but that didn't change anything.
I don't know what else could be causing this. Any thoughts?