Hi there. We have four designers that are working with InDesign CS5 and InCopy CS5. Three of these designers are working on Macs running OSX 10.8. The other is working on a Windows 7 machine. All of their files are stored on a Windows Server 2008 R2 file server. The problem is that whenever one of them makes updates to some files in a project and they save it, the others are unable to checkout any assignments from within either InDesign or InCopy. When they try to checkout the files to make changes, they get the following error message: "In use by Unknown in Adobe InDesign from document <file name>.indd"
The strange thing is that their files used to be stored on a Server 2003 file server and they never had any problems. But since we moved them over to this Server 2008 R2 machine I can't help but wonder if it is a problem with the server. In either case, I wanted to ask this question in here to get any opinion on what this could be.