Problem with editing a resource

There seems to be some problem with editing a resource that I’ve already scheduled. When I click on it it opens and I do my editing but then when I click OK nothing happens. Or rather the screen moves but it doesn’t move it to where I can click Save. The only way to get out of this area is to click cancel and then I’ve accomplished nothing. This used to work great until yesterday when the site was down. When it came back up this wasn’t working. I’ve tried this both on my laptop and my desktop computers. So it isn’t my computer.