I see the same problem with IE. The knowledge base says that one should remove the "no-cache" statement from the header, but that has strange side effects: Assume you export a logbook to a CSV file, and a few days later you export it again, since many things changed. But you browser will in that case not retrieve the new logbook, but read the old CSV file from the cache. But the browser does not tell you this, so you see an old version of the logbok without knowing this, which can be dangerous. So I better leave the "no-cache" in the header. The workaroung is not to click on "Save" on the file download dialog, but on "Open". You see then the CSV data inside the browser and can copy/paste it into a notepad document, then save it.