Steves ISY

I have an ISY-994i that has been working well for years. I have it controlling 5 security lights around the house with Insteon switches. It's working just fine. BUT, I've been locked out of the Administrative Console for months. I can log on to the device on my LAN and see and control the devices. (ie /WEB/udajax.htm#/config/ ) and I can see the "Please Keep this Page Open" screen.... But from this point the start.jnlp or the (older??) admin.jnlp only result in an error: "Adobe Acrobat Reader could not open 'start.jnlp' because it is either not a supported file type or because the file has been damaged (for example, it was sent as an email attachment and wasn't correctly decoded). What's going on? How did Adobe get involved? When I look at the start.jnpl file name it has an Adobe pdf symbol! Thanks Steve