Two situations which caused this message on "Viewing" an exising reservation:

"We were unable to review the latest information for this itinerary."

Calling co.com is no help - it is not a sync issue and the process they have to do a manual fix - does not work.

This has occurred two times in the last two days:

1. EUA occurred for flight this Friday - got the above message and could not View reservation to change seat assignment. co.com tech support could not fix. Also - did not get the normal EUA text message even though co.com says it was sent.

2. For upcoming flights in July - went to view and got the message - one of your flights had changed (by 2 minutes with no change of aircraft type or seat map arrangement). I accepted the change then the above message about not being able to view reservation occurred. Called co.com and they could not fixed. To make matters worst - the seat assignments for all passengers were lost for the return flight from ANC - not going to have too many happen flyers. co.com agent able to re-assign seats - but then I still can not view the reservation and the co.com agent can not fix.

This is a MAJOR BUG and NEEDS fixed ASAP. I can not understand why such major problems are starting to occur. There are no productivity gains, in my view, to the changes which were made to co.com several months ago - other than the faster calendar pop up.