When doing a manual sync, by highlighting all user in PO and doing Tools, GroupWise utilities, syncrhonize,

get "An error occurred modifying an attribute value. Attempted operation after a crucial error - should abort transaction (0xC050)"

There are BTW a good number of pending transactions. I discovered that two users each in different PO's are causing this problem. Or, at least, the error occurs when manually syncing those two users. Oddly, each happens to be the last user listed in that PO.

Manual says this code indicated a damaged domain database if it happens when "syncronizing" databases. I don't think that is what the gw/eDir sync is going. But they validate fine, in any case.

GWcheck on the users turns up nothing of interest.