Urgent help !

[ICUDoc]

Mine has the little link / trigger cable (both in the config and actually plugged in) but I'm not sure that's really necessary. If you happen to have one, give that a try

If you are using inputs/outputs on both Master and Companion I believe that there should be a link/trigger cable. It should appear on the Configuration if you select an input/output on the Configurator Companion. I note that you are using a sub out? Click on the Companion link input "digital" and make sure that you are allowing Companion input/outputs.

THANKYOU THANKYOU THANKYOU
I took my amps to a HiFi dealer to try out some new speakers.
When I got them home, the Companion said "Link Status:None"
Then followed 24 troubling hours (ok, 8 were sleep and five at work):
I tried fiddling with the digital interlink cable, rebooting, a new RCA cable, bypassing the power conditioner, then refreshing the SD Cards.
THEN the Companion started saying: "DOS Installation failed" NOW what?
After much heartbreak and mucking around, I found that the Companion SD Card had failed! So I tried to "share" a card (re-flashed in-between) - STILL no joy. WTAF? And trying to boot the Master first when playing SD Card tag is oddly difficult...
I then scrounged for a new card (found one in an old kid's camera) and reflashed again- no joy! Still no link!
New Config files, new DOS, nothing worked.
Then I looked closer at this thread: found this bit: Click on the Companion link input "digital"
And now: beautiful sound again! Thankyou so much for this post and these lovely, friendly, informative forums.
You should hear the double bass and cello I'm listening to now!!!!
Thankyou!