Not sure if it will solve your issue, but what I usually do is I download the file instead of running it from the browser - the one you have under web start button - then run 'cmd' as administrator, there I cd to directory with downloaded file and run it from there. If you're familiar with command line it should be easy :) if not I can try to provide more details. But in general running it as admin solved a similar (I think, I don't remember) problem I had
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