I have a user getting this error in InCopy CS4 v 6.0.3 on a Mac: "unable to check out this file. it may be in use by someone else". It seems like a glitch. The whole package has been assigned to this user. All the stories exported belong to this user. She is the only one touching this package. When she looks at the assignment palette, some of the stories have the pencil mark. The rest of the stories have a pencil with a line through it. It says it is checked out by UserA but the problem is UserA is trying to access it.
This problem somewhat comes and goes. The user is trained to check out all stories so I'm not sure why InCopy is doing this. Closing the application, restarting the Mac, opening and closing the document doesn't help. Does anyone have any suggestions?