Admin side errors

I'm not sure if there is any easy fix for this but let me toss out our issue.

When working on the administration side and update a change, create a post, etc. the screen will simply go blank. The update occurs (it doesn't error out) but we have to use the back botton and then refresh to show/verify the change. We recently moved to a new server and updated the site to use https. All the issues occurred after both changes were made.

I've reinstalled WordPress as well as the themes involved. Any other suggestions to fix our situation?

Thanks in advance. Can I make an extra donation to WPMU for the awesome service??

-Bill