I had one problem when opening a particular sheet in the document. I opened a document through server. When i click on the particular sheet document gets closed. I don't know what is the problem exactly. But when i open using qlikview client, i.e. directly from physical location no error comes.
Please submit this to QlikView Support. When doing so, the build number of QVS/Plugin/Dev are important (X.XX.xxxx). If you could send the application or a scaled down version and a step-by-step description on how to invoke the error it would be great.