Invalid clock source reverting to internal!!

[route44]

Hi everybody...

I am using a Dual 2.5 G5 with 2.5GB of ram, a Digi002r and an ADAT XT 20.

I cannot seem to figure out why the clock source wont let me set the adat up to get those extra 8 tracks.
It doesnt even show up in the peripherals, if that matters.

I have been using PTLE 5.1.1 on a G4 with the Digi 001 and the very same ADAT and have had no problems whatsover.
What am I missing here? I have dbl checked the Lightpipes are in tight and properly set in-out and out-in.
This must be something rudimentary in the newer versions?

[fire2k2]

That happens with my G5 as well.* Usually a restart of my computer and my A/D will fix it.

[route44]

Thanks for the rapid response but sadly this did not fix the issue.

I should clarify the correct error message I am receiving when setting clouck source to ADAT is:

"The External Clock Choice is Invalid. Resetting to Internal."

So I am basically dead in the water for receiving the 8 extra outs from my ADAT via the
Soundcraft Mixer's TRS analog direct outs feeding into
the ADAT via 56pin Elco Snake,
and leaving ADAT XT20 via
the lightpipe out--->into Digi002 Rack optical in.

Still perplexed, if anyone knows the secret handshake for this, it would be greatly appreciated.

Thanks in advance!

[BFrederick]

Are you certain in your PT hardware preferences that your optical in is set to ADAT as opposed to SPDIF?

[route44]

How would I set that? (PT Prefs optical in)
I am thinking it already says on the top line: RCA=SPDIF, Optical=ADAT
Thanks for replying, any help is very much appreciated.