If you get problems opening a workset, often followed by an error message about "Last server operation was interrupted..." and then another message about "Unknown exception", there will normally be a file called "*.InTransaction" in the directory where the workset is. To find this directory, see: Find the location of a workset.If this file is deleted, you should be able to open the workset again.If the operation you where trying to do before this happened, goes wrong again, please send the detailed error report from this problem to support.