Problems Repackaging

I am a designer using InDesign CS3. I save the assignments as an InCopy Package and then upload it to our project server. One of the editors then downloads it to their hard drive and makes their edits. They are have problems (crashing) when they try to repackage the assignment for inCopy and upload it again to the project server. (No one is working directly on the project server) I don''t know if the problem is passing assignments from one editor to another before it comes back to the designer as an InDesign Package. Or if after every edit it needs to come back to the designer so I can update and repackage it in InDesign for the next editor.

This hasn't been a global problem that I can recreate. And of course the problem is happening in a remote office so I can't directly trouble shoot the problem.

Has anyone run into this before?
Would setting up a Version Cue server help?

Thanks,
Sharon