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Decision Tree, Sensitivity, and Simulation Add-Ins
For Microsoft Excel 2010&2013 (Windows) and Excel 2011 (Mac)
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Clipboard Cannot Be Emptied Error

Problem: You select a decision tree node, run TreePlan, select to modify the tree structure (for example, add a branch or change a node), click OK, and you receive an error message like the following:

"The Clipboard cannot be emptied. Another program might be using the Clipboard."

A similar error message on some systems is "Cannot empty the Clipboard."


Possible cause:  Another program is continuously monitoring the Clipboard.

When TreePlan redraws the tree diagram, Excel must also use the Clipboard for Copy and Paste operations.

If two applications try to use the Clipboard at the same time, the error message is displayed.


Solution:  Close applications that monitor the Clipboard before running Excel and TreePlan.


More information: During 2012 there were reports that Clipboard-monitoring applications included the Skype add-in for browsers and Bing Desktop, but there were subsequent reports that updated versions had fixed the problem.

There may be other applications that cause the same error.

If you encounter this problem and want the most recent information, search Google or Bing for "clipboard cannot be emptied" or "cannot empty clipboard" or the exact wording of the specific error message you see (without the quote marks).


To provide feedback or for additional information about TreePlan, SensIt, and SimVoi, please send e-mail to Mike Middleton <>.

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