Save PivotChart as Image error

[jimmack]

MSPS2007: In Data Analysis, when I try to save either the PivotTable as Image
or PivotChart as Image, I get a Windows Internet Explorer popup that contains
a yellow triangle and exclamation point, an "OK" button and that's it--no
text, no error, just the graphic and OK button.

When I click ok, the popup closes, but the graphic is not saved.

Any idea what's going on?

To my knowledge, our installation of PS2007 has always behaved this way, but
I would like to fix it.

Thanks!
Jim