The latest version of Indigo (1.5.5) is now posted for download:
This build fixes a major problem that causes a freeze when disconnecting, connecting and uploading data to the PowerLinc Controller (1132CU) after December 14th (no joke -- the problem only happens between 12/14 and 12/31). PowerLinc USB (1132U) users will not have the freeze.
Before you launch Indigo 1.5.5 and try to connect to the PowerLinc Controller, you must:
1) Unplug the PowerLinc from the outlet and wall.
2) Press and hold the reset button for a couple of seconds.
3) Plug it back into the outlet and release the reset button.
4) Reboot your Mac.