Stuck on "Establishing Connection with indigo server"

Hi Guys
Issue start when I loose connection with my PLM, I switch usb port and PLM was seen by my iMac but not indigo, so I tried to disable interface unfortunately indigo begin to be un responsive, I restarted the mac and since when I tried to open indigo get this message"Establishing Connection with indigo server".
If I reinstall indigo he restart but fall on the same message few second after the opening....
Any clue...

Its on the server/iMac running indigo , not on remote computer!

[matt (support)]

After you try the Mac restart also try it with the PLM (PowerLinc?) totally disconnected from the Mac.

ok your are right when I unplug the plm, indigo software start, when I replug the PLM popup "Establishing Connection with indigo server" come up!

[matt (support)]

What happens when Indigo is restarted with PLM unplugged, then while it is working/running you plug in the PLM? The "Establishing connection..." alert cannot come up because that is only shown when the Indigo client/UI is first launched.

Finally change PLM usb port for the previous working port, restarted and everything is back to normal !
Which brings me to another question, does the PLM in my case Insteon 2413U is reliable (2 years old)? I'm coming from ISY99 and each 2-3 years the PLM 2413S was good for the garbage...