Why do I receive an error when trying to drag and drop commands from the Command History window to the Command Window in MATLAB 7.0.1 (R14SP1) on MacOS?

When I am dragging a command from the Command History window to the Command Window, I receive the following error message:

 java.lang.NullPointerException 

         at apple.awt.CDropTargetContextPeer.flushEvents(CDropTargetContextPeer.java:51)

Answer 1

[MathWorks Support Team]

This might be caused by a problem with the Mac Java version. You can resolve the problem by downloading the Java 1.4.2 version from the Apple web site.

As a workaround in MATLAB, recall previous statements in the Command Window by using the up arrow, instead of dragging and dropping commands from the Command History window.

Some MATLAB users have reported that re-installing MATLAB resolved this issue.