Hi Kevin,
I can’t duplicate that problem - What FastExcel settings are you using?
FastExcel Active Workbook mode prevents copy-paste between workbooks but not within a single workbook.
FastExcel Clean workbook actions will clear the clipboard except for a few options
There are probably a few other FastExcel commands that clear the clipboard but it should not happen unless you use a FastExcel command.
Many VBA methods clear the clipboard …
Charles