Little problem after moving a site. (Frame goes black after saving in manager)

I got a small problem after moving a site from one place to another.

It’s the same servers running the same OS, and almost everything works perfectly.

But after i edit a site, and then save it (In the administration) i end up in a blank page. The frame that helds the content goes white.
The change is saved, and everything else is working.

I’m using Mod X version: 0.9.6.2

Any idea of what i could do to solve the problem

I had this issue recently and fixed it my running an upgrade on the MODx install.