There is now an installer for a Macintosh user interface. It runs on Mac OS X Leopard and Snow Leopard, and it is in PDFReflow-0.8.6.1.dmg.zip.
The Windows version and the Ubuntu version of the user interface have been updated - PDFReflow-0.8.6.1-Setup.zip for Windows, and PDFReflow-0.8.6.1.jar.zip for Ubuntu.
The command line version remains unchanged.
The help has been corrected and enhanced on the user interface.