4.1.18 is now available for download.

In addition to the major 4.0 improvements and 4.1 features, this update includes:

• Added support for new INSTEON SwitchLinc dimmer (power-line only model).
• Improved reliability of the optional SQL logging client.
• Fixed bug that would cause device states on some modules (motion sensor) to incorrectly update.
• Fixed the NOAA Weather script so that it uses curl to get the data file rather than URL Scripting Access, which was dropped in Mac OS X Lion.