[TYPO3] click enlargement not working in 4.0

Wed Jun 21 19:08:19 CEST 2006

Hi!
I updated from 3.8.0 to 4.0 by overwriting the files, etc..
i have the following problem: if i try to click enlarge an image, the 
window with the eid parameter just stays black. No image is shown. The 
source code is:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<html>
<head>
	<title>Image</title>
</head>
		<body bgcolor="black">
		</body>
		</html>

What can i do?
Andreas