CurveExpert Professional 1.6.1 is a maintenance update in order to address some longstanding and newly introduced stability issues.

• RESOLVED: Choosing File|New with more than two independent variables caused erratic behavior.
• RESOLVED: Choosing File|New with standard deviation checked caused erratic behavior.
• RESOLVED: Preview pane still showed a 2D plot when the data was 3D.
• RESOLVED: stability fixes for graph containment test (detecting if the mouse is within an interactive object on a graph)
• RESOLVED: erratic graph behavior if the zoom or pan hotkeys were pressed during an actual zoom or pan.
• RESOLVED: Undo in the main menu was not appropriately dimmed when there was nothing to undo.
• RESOLVED: Error when trying to clone a "4D" graph.  Now, cloning is disallowed.
• RESOLVED: changing a column name or row name in the spreadsheet did not mark the document as changed.  Fixed.
• RESOLVED:  Clicking on a curve in the analyze tab of the results dialog generated an error report.  Fixed.
• RESOLVED: Rare problems in setting the "Refresh Graph Themes" setting in the application preferences dialog.
• RESOLVED: Strange behavior by Redo when undoing/redoing an initial data point insertion into an empty dataset that has more than two columns.

• CHANGED: disabled any interaction with the preview plot; this plot is only programatically controlled now.
• CHANGED: decreased processing time during mouse movements in the graphs, slightly.
• CHANGED: the preview plot axis labels now track the names of the columns from the dataset.