No error, it just brings up the dialogue box as soon as I open the sequence, that there are offline files. I can reconnect them with no issue, it is just time consuming when there are multiple files in different places on our shared drives. As for what comes up offline. There really is not a rhyme or reason. Some sequences will be mostly just graphics, other sequences will be video files. The only things that stay online consistently are Final Cut generated elements (i.e. Color Bars, Slates, etc.).