Hi Scott,
These sort of problems are normally due to poor wi-fi reception and the plugin not picking up the response from the LIFX device.
What do you have your polling time set to? It may take number of polls after a restart for all the LIFX devices to be detected.
How many LIFX devices do you have and what model/firmware are they on?
Also, are you saying that if one goes
no ack they all go
no ack?
If you turn on all debugging and then reload the plugin and attach the LIFX debug llog of the output after the problem occurs and I will see if I can spot anything.
Access the log from the Indigo
Event Log window >
Show Event Logs Folder > open folder
com.autologplugin.indigoplugin.lifxcontroller and the log is
plugin.log.
Either PM it to me or attach it to a reply to this post.