Excel 2007, SP2

I have an activex command button, "CommandButton1" on Sheet1, which issues
command "UserForm1.Show"; in Userform1 I have a command button, "PrintIt"
with the single line "ActiveWorkbook.Sheets("Chart2").PrintPreview" in the
_click event handler. (The same problem occurs with "printout", but this way
I don't waste the paper.)

What happens is, I get the chart in the preview window, but it's as if there
is a smaller version of the chart on top of a larger version. As I
indicated, if I use "...printout" instead of "...printpreview", it prints
this way, too, i.e., with "2 images" of the chart, a smaller superimposed on
a larger.

The same line, "ActiveWorkbook.Sheets("Chart2").PrintPreview" (or
..PrintOut), when attached directly to a command button on the spreadsheet,
works as expected, with only one image of the chart.

There is no such problem in Excel 2003, i.e., a command button on a userform
can successfully call "printout" (or "printpreview") without creating a
deformed double chart.

Be warned: if you try this with "PrintPreview", it'll hang up the sheet to
the point that only killing it from taskman will get you out.

I can provide a sample if that helps, but there doesn't appear any place to
put an attachment.