I'm trying to Import Existing Data from jira onDemand like instruqtions say. I've just installed jira on my host and choosed "Import Existing Data". Than specified the zip file and after pressing "import" it tryes to start importing but after a few sacends goes back and under the licence key textarea writes "Invalid license key specified." (the textarea is empty, I'm not givind any new licence). what could cause this? and should I ask my admin to give me some licence key?