We're having a great number of problems with media files "Not being found" when playing a sequence.  Mostly renders and mostly files that have been sent from one machine to another.

The files exist on the Unity somewhere and they are in either an OMFI Medifiles folder or an MXF folder.   But due to sharing the project on Unity with a standalone system and having to rescan various drives and rebuild databases at either end it seems to come up now and again.  It seems to be groups of files in one particular User's Folder (Such as Z1.1 where Z1 is a user).  Eventually some combination of rebuilding the database for that folder and saving and starting again clears it for one user, but then making sure it is not a problem for every other user seems to require some secret sequence of events.

Once one user on the unity gets it, this seems to spread, particularly if they have an old sequence open first.

Anybody had this before? Particularly on two distant synchronised systems and do you have a sure fire work around?

I'm sure making EVERYBODY rebuild their databases and all getting out and getting back in again might work but that's quite time consuming on such a big project.