Red X in printpreview/print of template charts in Internet Explorer

Hi,

with the last release of the Netweaver 7.30 we got a problem with printing of Web-Charts from Web-templates.

Now Webtemplates show an "red X" instead of the chart when going into print preview of the Internet Explorer or trying to pring a chart out of a
webtemplate. They do show the correct graphics - when just viewing it...

Has anybody an idea whats wrong? Because - the logo shows even fine in Print-Preview of IE.

Johannes