Are you running any code in the workbooks? Code can clear the clipboard.
other than that are you working with two workbooks in one instance of Excel
or are you working with two instances of Excel? That will cause some
difficulties with copy and paste...
--
HTH...

Jim Thomlinson


"Keith" wrote:

I have an Excel Application that works as expected. However, I am unable to
copy and paste data into another workbook. I thoughts as to what's causing
this?