A further update with:
improved GCFrame and supporting Swing classes to support grids of graphs and tabbed panes
changes to support Java 7 on Mac where JFileChooser is troublesome
some additional fast plot types e.g. cloud plots
support to save plots without the accompanying Swing hierarchy
logging via the s4j facade so you can choose any supported logging system
There have been some changes to the API but old files should still load. Save them again, once loaded, to update them.
Note that clipboard function is not available on MacOS/Java 7 as of release u51. This is a Java issue which is fixed in the Java 1.7.60ea release.