How are you pasting it?

I have no problem using the Word Insert Object command.

1 - In Excel, have the chart saved in its own separate .xls file, no
other worksheets.
2 - In Word, choose InsertObject.
3 - Click on the Create from File tab and browse to the .xls file.
(Choose Link to file if you'll be making changes to the chart and you
want them transferred every time you open the Word doc.)
4 - Okay, voila, chart's in there looking fine. You can adjust the
overall size of the chart-object if it's too big for the Word page.

Does that help?