still running on guesses, what Bob says is true on the software side, if you have avid and FCP on the same partition, no telling what interactions will occur especially at driver level, let each play in its own sandbox rather than risk it!!!
That is suffering, esp as often it comes and goes, and only when a deadline appears, then it shows.
Have you ever had this working or is it a first try?.
If you manually configure the deck from the list do you get the same message? auto config talks the deck first, manual doesn`t.
If you do, then it looks like software issues as above.
I have had this and other error messages on crap out from users trying autoconfigure with a mojo IO, (just a mojo and express or newscutter or….. only AVID there) , but a power cycle of the mojo after powering down the computer and a manual deck configure from the list on reboot ususally gets round it.
It doesn`t usually happen with an adrenaline or the older digidesign 2 cream i/o`s (888`s?) or the black protools, unless it is a 2000 deck , and then you have to lie and say it really is a 500 rather than auto.
still don`t have enough info from you to know how relevant what I (sorry, we) are saying is.
bests E