This is a tip which will no doubt have a very limited audience!
If you are using Cocoon 2.1 on Mac OS X 10.5 or 10.6, the flowscript debugger doesn’t work. This is because it isn’t compatible with the Apple look & feel. You need to change the system default look & feel to get it working.
You can do this by editing the file which configures the default look & feel - /System/Library/Frameworks/JavaVM.framework/Versions/1.6/Home/lib/swing.properties.
The contents of this file, by default, are:
swing.defaultlaf=apple.laf.AquaLookAndFeel
You need to comment this out, and use Sun’s metal look & feel instead:
#swing.defaultlaf=apple.laf.AquaLookAndFeel
swing.defaultlaf=javax.swing.plaf.metal.MetalLookAndFeel
Now the flowscript debugger will work properly.